“Citation sequence” format
Common in journals of medical and physical sciences
Used by PubMed and MEDLINE
Referencing is a tedious task and if not taken seriously and performed diligently, it is prone to many (easily avoidable) errors.[ 7 ] A reference should be accurate, clear, and consistent throughout the manuscript.[ 6 ] An incorrect reference not only questions the credibility of the paper, but also makes it difficult for the reviewers and the readers to seek the cited article, thus denying the source author of due credit for his/her work.[ 3 ] It is the author's responsibility to cite the most relevant and appropriate references in his/her research.[ 3 ] The author should not only locate, read, and understand all sources cited by him/her ( intellectual pleasure ), but also confirm the source and provide all elements of the source correctly ( accuracy ).[ 6 ] The author should be careful not to copy references from an earlier article, but should actually rewrite each selected reference afresh.[ 6 ] Some common errors occurring during referencing are summarized in Table 2 .[ 6 , 7 ]
Common errors in the “in-text citation” and the “reference list”[ 6 , 7 ]
Errors in citation | Errors in reference list |
---|---|
Citing a cross reference without reading the original source | The journal format is not followed/not adhered to |
Duplication of citation in the manuscript | Reference is just copied from another published article without verifying the original source reference |
In-text citation does not adhere to the format of the target journal | Errors in listing names of authors, journal, year, volume number, page numbers, and so on |
Multiple citations put at the end of the sentence instead of mentioning the reference just after the fact that the particular reference specifically pertains to | Error in number of authors listed |
In-text citation without mentioning the reference in the reference list | Incorporating irrelevant information such as issue number, date and month of publication (when the target journal does not need it, as per the journal’s instructions to authors) |
Citing a reference based on its abstract only (and without reading the full paper) | Resubmitting a rejected article to another journal without modifying in-text citation or reference list as per the new journal’s requirements |
Using personal communications as references Referencing the abstract and results sections of the manuscript | Citing the print version of a source while the online version has been accessed Citing retracted references |
As described earlier, there is a wide variation in the journal formatting styles and it is laborious for the researcher to store, organize, and manage the references throughout the process of literature review and protocol planning till the drafting and manuscript submission.[ 21 ] Even more challenging is the addition/deletion or reordering of references (in text as well as in the reference list) with each revision or submission to a newer journal.[ 22 ] There is an increased likelihood of making errors in citing, especially while organizing the references and writing the reference list.[ 23 ] To minimize such errors, reference management software (RMS), also known as citation management software or bibliographic management software, are available to the authors/researchers.[ 21 ] They not only help to search and retrieve the online scientific sources, but also help to import them to their database for storing, organization, and subsequent retrieval.[ 22 ] Many RMS have cloud-based storage, enabling users to be able to access the information from multiple devices as well as collaborate with other researchers.[ 22 ] RMS also allow authors to retrieve citations while writing in the format of desired journal, thus permitting to “cite while you write.”[ 14 ] They also enable addition, deletion, insertion of references in the text and automatic (auto) resequencing of their order in the main manuscript (text) as well as in the reference list.[ 22 ] They can generate reference lists in multiple formats/citation styles to suit the target journal requirements and allow conversion of one format style to another with ease at the click of the mouse.[ 14 ] By linking each citation with a full reference, they ensure each citation in the text is accounted for by a corresponding full reference in the list.[ 12 ] Most of them are compatible for use with common programs such as Microsoft Word and Google Docs.[ 24 ]
There are numerous programs for reference management available in the market – independent applications, those operating within an internet interface, and combination of both these modes.[ 1 ] The most commonly used are Mendeley by Elsevier ( www.mendeley.com ), EndNote ( www.endnote.com ) by Thomson Reuters, and Zotero ( www.zotero.org ).[ 1 ] Some others are RefWorks, F1000 Workspace, JabRef, Citavi, Bibsonomy, ReadCube Papers, Colwiz, Sente, RefME, Connotea, CiteULike, BibTeX, and Microsoft Word.[ 22 , 24 , 25 ] While many of them are free, some are fee based and require a (paid) subscription.[ 13 ]
Despite the use of RMS, one cannot guarantee absence of referencing errors, as there can be errors in details (author names, journal title, dates) or duplication of references when retrieved from different databases.[ 23 ] So, ultimately, the authors (themselves) are responsible for the accuracy of the references cited by them (whether they do the referencing using RMS or manually).
Thus, referencing is an essential part of research and should be assigned due importance, right from the conception of the study question till its delivery as a publication. It plays a vital role throughout the manuscript and appears in almost all sections – from laying down the foundation for study rationale (in the “Introduction” section of the manuscript), describing/justifying the study procedure/s (in the “Methods” section), validating the results (in the “Results” section) and its implications (in the “Discussion” section of the manuscript). References are also utilized by editors to identify subject experts for peer review, by readers to obtain more resources on the subject matter, and by peer reviewers to critically evaluate the manuscript in the light of the available evidence. It is thus essential that references are chosen wisely and carefully as they are representative of the study. It is the author's responsibility to confirm the clarity, accuracy, and appropriateness of the cited sources. One should be careful to avoid common referencing errors to prevent delay/rejection by the journal of interest. As Vancouver style is the commonly preferred citation style by journals of medicine and health sciences, researchers should be well versed with it. Authors should diligently stick to the instructions and style of the target journal. The availability of reference management software such as Mendeley and EndNote has made the authors’ task of collecting, storing, organizing, retrieving, and utilizing the references more efficient and easier; however, it is still the authors’ responsibility to select appropriate references and cite them accurately and correctly.
Conflicts of interest.
There are no conflicts of interest.
What is a citation.
Citations are a way of giving credit when certain material in your work came from another source. It also gives your readers the information necessary to find that source again-- it provides an important roadmap to your research process. Whenever you use sources such as books, journals or websites in your research, you must give credit to the original author by citing the source.
Scholarship is a conversation and scholars use citations not only to give credit to original creators and thinkers, but also to add strength and authority to their own work. By citing their sources, scholars are placing their work in a specific context to show where they “fit” within the larger conversation. Citations are also a great way to leave a trail intended to help others who may want to explore the conversation or use the sources in their own work.
In short, citations
(1) give credit
(2) add strength and authority to your work
(3) place your work in a specific context
(4) leave a trail for other scholars
"Good citations should reveal your sources, not conceal them. They should honeslty reflect the research you conducted." (Lipson 4)
Lipson, Charles. "Why Cite?" Cite Right: A Quick Guide to Citation Styles--MLA, APA, Chicago, the Sciences, Professions, and More . Chicago: U of Chicago, 2006. Print.
Different subject disciplines call for citation information to be written in very specific order, capitalization, and punctuation. There are therefore many different style formats. Three popular citation formats are MLA Style (for humanities articles) and APA or Chicago (for social sciences articles).
MLA style (print journal article):
Whisenant, Warren A. "How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX." Sex Roles Vol. 49.3 (2003): 179-182.
APA style (print journal article):
Whisenant, W. A. (2003) How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX. Sex Roles , 49 (3), 179-182.
Chicago style (print journal article):
Whisenant, Warren A. "How Women Have Fared as Interscholastic Athletic Administrators Since the Passage of Title IX." Sex Roles 49, no. 3 (2003): 179-182.
No matter which style you use, all citations require the same basic information:
You are most likely to have easy access to all of your citation information when you find it in the first place. Take note of this information up front, and it will be much easier to cite it effectively later.
When writing a research paper, there are many different types of sources that you might consider citing. Which are appropriate? Which are less appropriate? Here we discuss the different types of sources that you may wish to use when working on a research paper.
Please note that the following represents a general set of recommended guidelines that is not specific to any class and does not represent department policy. The types of allowable sources may vary by course and instructor.
In general, you should primarily cite peer-reviewed journal articles in your research papers. Peer-reviewed journal articles are research papers that have been accepted for publication after having undergone a rigorous editorial review process. During that review process, the article was carefully evaluated by at least one journal editor and a group of reviewers (usually scientists that are experts in the field or topic under investigation). Often the article underwent revisions before it was judged to be satisfactory for publication.
Most articles submitted to high quality journals are not accepted for publication. As such, research that is successfully published in a respected peer-reviewed journal is generally regarded as higher quality than research that is not published or is published elsewhere, such as in a book, magazine, or on a website. However, just because a study was published in a peer-reviewed journal does not mean that it is free from error or that its conclusions are correct. Accordingly, it is important to critically read and carefully evaluate all sources, including peer-reviewed journal articles.
Tips for finding and using peer-reviewed journal articles:
Another potential source that you might use when writing a research paper is a book, encyclopedia, or an official online source (such as demographic data drawn from a government website). When relying on such sources, it is important to carefully consider its accuracy and trustworthiness. For example, books vary in quality; most have not undergone any form of review process other than basic copyediting. In many cases, a book’s content is little more than the author’s informed or uninformed opinion.
However, there are books that have been edited prior to publication, as is the case with many reputable encyclopedias; also, many books from academic publishers are comprised of multiple chapters, each written by one or more researchers, with the entire volume carefully reviewed by one or more editors. In those cases, the book has undergone a form of peer review, albeit often not as rigorous as that for a peer-reviewed journal article.
Tips for using books, encyclopedias, and other scholarly works:
Most research papers can be written using only peer-reviewed journal articles as sources. However, for many topics it is possible to find a plethora of sources that have not been peer-reviewed but also discuss the topic. These may include articles in popular magazines or postings in blogs, forums, and other websites. In general, although these sources may be well-written and easy to understand, their scientific value is often not as high as that of peer-reviewed articles. Exceptions include some magazine and newspaper articles that might be cited in a research paper to make a point about public awareness of a given topic, to illustrate beliefs and attitudes about a given topic among journalists, or to refer to a news event that is relevant to a given topic.
Tips for using magazines, blogs, and websites:
How-To Videos
Databases and Search Engines (may require connection to UCSD network)
UCSD Resources on Finding and Evaluating Sources
External Resources
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References: common reference list examples, article (with doi).
Alvarez. E., & Tippins, S. (2019). Socialization agents that Puerto Rican college students use to make financial decisions. Journal of Social Change , 11 (1), 75–85. https://doi.org/10.5590/JOSC.2019.11.1.07
Laplante, J. P., & Nolin, C. (2014). Consultas and socially responsible investing in Guatemala: A case study examining Maya perspectives on the Indigenous right to free, prior, and informed consent. Society & Natural Resources , 27 , 231–248. https://doi.org/10.1080/08941920.2013.861554
Provide a DOI number if there is one. DOI stands for "digital object identifier," a number specific to the article that can help others locate the source. Use CrossRef.org to locate DOI information. This rule applies regardless of how the source was accessed (e.g., online, paper, etc.; see APA 7, Section 9.34).
In APA 7, format the DOI as a web address. Active hyperlinks for DOIs and URLs should be used for documents meant for screen reading. Present these hyperlinks in blue and underlined text (the default formatting in Microsoft Word), although plain black text is also acceptable. Be consistent in the formatting choice for DOIs and URLs throughout the reference list. (Note that this guidance has changed from APA 6 where all hyperlink formatting was removed and no active links were included. In APA 6, the URLs appeared in plain, black type and did not link out from the document.)
Also see our Quick Answer FAQ, "Can I use the DOI format provided by library databases?"
Jerrentrup, A., Mueller, T., Glowalla, U., Herder, M., Henrichs, N., Neubauer, A., & Schaefer, J. R. (2018). Teaching medicine with the help of “Dr. House.” PLoS ONE , 13 (3), Article e0193972. https://doi.org/10.1371/journal.pone.0193972
For journal articles that are assigned article numbers rather than page ranges, include the article number in place of the page range.
For more on citing electronic resources, see Electronic Sources References .
Found in a common academic research database or in print.
Casler , T. (2020). Improving the graduate nursing experience through support on a social media platform. MEDSURG Nursing , 29 (2), 83–87.
If an article does not have a DOI and you retrieved it from a common academic research database through the university library, there is no need to include any additional electronic retrieval information. The reference list entry looks like the entry for a print copy of the article. (This format differs from APA 6 guidelines that recommended including the URL of a journal's homepage when the DOI was not available.)
Note that APA 7 has additional guidance on reference list entries for articles found only in specific databases or archives such as Cochrane Database of Systematic Reviews, UpToDate, ProQuest Dissertations and Theses Global, and university archives. See APA 7, Section 9.30 for more information.
Eaton, T. V., & Akers, M. D. (2007). Whistleblowing and good governance. CPA Journal , 77 (6), 66–71. http://archives.cpajournal.com/2007/607/essentials/p58.htm
Provide the direct web address/URL to a journal article found on the open web, often on an open access journal's website.
In APA 7, active hyperlinks for DOIs and URLs should be used for documents meant for screen reading. Present these hyperlinks in blue and underlined text (the default formatting in Microsoft Word), although plain black text is also acceptable. Be consistent in your formatting choice for DOIs and URLs throughout your reference list. (Note that this guidance has changed from APA 6 where all hyperlink formatting was removed and no active links were included. In APA 6, the URLs appeared in plain, black type and did not link out from the document.)
Weinstein, J. A. (2010). Social change (3rd ed.). Rowman & Littlefield.
If the book has an edition number, include it in parentheses after the title of the book. If the book does not list any edition information, do not include an edition number. The edition number is not italicized. (Note: In APA 6, the location of the publisher was included. This is no longer the case in APA 7; only the publisher name is provided.) Regarding publisher name, when a publisher is named after a person (as is the case with Lawrence Erlbaum or John Wiley), list only the surname (Erlbaum or Wiley). In addition, exclude “Publishers,” “Inc.,” and “Co.” from publisher names in reference entries.
American Nurses Association. (2010). Nursing: Scope and standards of practice (2nd ed.).
In APA 7, if the author and publisher are the same, only include the author in its regular place and omit the publisher. (Note that this is a change from APA 6, where the term “Author” was used for the publisher instead of repeating the name.)
Lencioni, P. (2012). The advantage: Why organizational health trumps everything else in business . Jossey-Bass. https://amzn.to/343XPSJ
As a change from APA 6 to APA 7, it is no longer necessary to include the ebook format in the title. However, if you listened to an audiobook and the content differs from the text version (e.g., abridged content) or your discussion highlights elements of the audiobook (e.g., narrator's performance), then note that it is an audiobook in the title element in brackets. For ebooks and online audiobooks, also include the DOI number (if available) or nondatabase URL but leave out the electronic retrieval element if the ebook was found in a common academic research database, as with journal articles. APA 7 allows for the shortening of long DOIs and URLs, as shown in this example. See APA 7, Section 9.36 for more information.
Poe, M. (2017). Reframing race in teaching writing across the curriculum. In F. Condon & V. A. Young (Eds.), Performing antiracist pedagogy in rhetoric, writing, and communication (pp. 87–105). University Press of Colorado.
Include the page numbers of the chapter in parentheses after the book title. The page range should not be italicized.
Christensen, L. (2001). For my people: Celebrating community through poetry. In B. Bigelow, B. Harvey, S. Karp, & L. Miller (Eds.), Rethinking our classrooms: Teaching for equity and justice (Vol. 2, pp. 16–17). Rethinking Schools.
Also include volume number and edition numbers in the parenthetical information after the book title where relevant.
Freud, S. (1961). The ego and the id. In J. Strachey (Ed.), The standard edition of the complete psychological works of Sigmund Freud (Vol. 19, pp. 3-66). Hogarth Press. (Original work published 1923)
When a text has been republished as part of an anthology collection, after the author’s name include the date of the version that was read. At the end of the entry, place the date of the original publication inside parenthesis along with the note “original work published.” For in-text citations of republished work, use both dates in the parenthetical citation, original date first with a slash separating the years, as in this example: Freud (1923/1961). For more information on reprinted or republished works, see APA 7, Sections 9.40-9.41.
Retrieved from a database
Nalumango, K. (2019). Perceptions about the asylum-seeking process in the United States after 9/11 (Publication No. 13879844) [Doctoral dissertation, Walden University]. ProQuest Dissertations and Theses.
Retrieved From an Institutional or Personal Website
Evener. J. (2018). Organizational learning in libraries at for-profit colleges and universities [Doctoral dissertation, Walden University]. ScholarWorks. https://scholarworks.waldenu.edu/cgi/viewcontent.cgi?article=6606&context=dissertations
Unpublished Dissertation or Thesis
Kirwan, J. G. (2005). An experimental study of the effects of small-group, face-to-face facilitated dialogues on the development of self-actualization levels: A movement towards fully functional persons [Unpublished doctoral dissertation]. Saybrook Graduate School and Research Center.
For further examples and information, see APA 7, Section 10.6.
For legal references, APA follows the recommendations of The Bluebook: A Uniform System of Citation , so if you have any questions beyond the examples provided in APA, seek out that resource as well.
Court Decisions
Reference format:
Name v. Name, Volume Reporter Page (Court Date). URL
Sample reference entry:
Brown v. Board of Education, 347 U.S. 483 (1954). https://www.oyez.org/cases/1940-1955/347us483
Sample citation:
In Brown v. Board of Education (1954), the Supreme Court ruled racial segregation in schools unconstitutional.
Note: Italicize the case name when it appears in the text of your paper rather than citing it—for example, “Cases such as Brown v. Board of Education and Parents Involved in Community Schools v. Seattle illustrate ...”
Name of Act, Title Source § Section Number (Year). URL
Sample reference entry for a federal statute:
Individuals With Disabilities Education Act, 20 U.S.C. § 1400 et seq. (2004). https://www.congress.gov/108/plaws/publ446/PLAW-108publ446.pdf
Sample reference entry for a state statute:
Minnesota Nurse Practice Act, Minn. Stat. §§ 148.171 et seq. (2019). https://www.revisor.mn.gov/statutes/cite/148.171
Sample citation: Minnesota nurses must maintain current registration in order to practice (Minnesota Nurse Practice Act, 2010).
Note: The § symbol stands for "section." Use §§ for sections (plural). To find this symbol in Microsoft Word, go to "Insert" and click on Symbol." Look in the Latin 1-Supplement subset.
Note: U.S.C. stands for "United States Code."
Note: The Latin abbreviation " et seq. " means "and what follows" and is used when the act includes the cited section and ones that follow.
Note: List the chapter first followed by the section or range of sections.
Unenacted Bills and Resolutions
(Those that did not pass and become law)
Title [if there is one], bill or resolution number, xxx Cong. (year). URL
Sample reference entry for Senate bill:
Anti-Phishing Act, S. 472, 109th Cong. (2005). https://www.congress.gov/bill/109th-congress/senate-bill/472
Sample reference entry for House of Representatives resolution:
Anti-Phishing Act, H.R. 1099, 109th Cong. (2005). https://www.congress.gov/bill/109th-congress/house-bill/1099
The Anti-Phishing Act (2005) proposed up to 5 years prison time for people running Internet scams.
These are the three legal areas you may be most apt to cite in your scholarly work. For more examples and explanation, see APA 7, Chapter 11.
Clay, R. (2008, June). Science vs. ideology: Psychologists fight back about the misuse of research. Monitor on Psychology , 39 (6). https://www.apa.org/monitor/2008/06/ideology
Note that for citations, include only the year: Clay (2008). For magazine articles retrieved from a common academic research database, leave out the URL. For magazine articles from an online news website that is not an online version of a print magazine, follow the format for a webpage reference list entry.
Baker, A. (2014, May 7). Connecticut students show gains in national tests. New York Times . http://www.nytimes.com/2014/05/08/nyregion/national-assessment-of-educational-progress-results-in-Connecticut-and-New-Jersey.html
Include the full date in the format Year, Month Day. Do not include a retrieval date for periodical sources found on websites. Note that for citations, include only the year: Baker (2014). For newspaper articles retrieved from a common academic research database, leave out the URL. For newspaper articles from an online news website that is not an online version of a print newspaper, follow the format for a webpage reference list entry.
The general structure for a technical or research report is as follows:
Author, A. A. (Publication Year). Title of work . Publisher Name. DOI or URL
Edwards, C. (2015). Lighting levels for isolated intersections: Leading to safety improvements (Report No. MnDOT 2015-05). Center for Transportation Studies. http://www.cts.umn.edu/Publications/ResearchReports/reportdetail.html?id=2402
Technical and research reports by governmental agencies and other research institutions usually follow a different publication process than scholarly, peer-reviewed journals. However, they present original research and are often useful for research papers. Sometimes, researchers refer to these types of reports as gray literature , and white papers are a type of this literature. See APA 7, Section 10.4 for more information.
American Federation of Teachers. (n.d.). Community schools . http://www.aft.org/issues/schoolreform/commschools/index.cfm
If there is no specified author, then use the organization’s name as the author. In such a case, there is no need to repeat the organization's name after the title.
Vartan, S. (2018, January 30). Why vacations matter for your health . CNN. https://www.cnn.com/travel/article/why-vacations-matter/index.html
For webpages from news websites, include the site name after the title and before the URL. If the source is an online newspaper or magazine, follow the models in the previous sections of this page. In APA 7, active hyperlinks for DOIs and URLs should be used for documents meant for screen reading. Present these hyperlinks in blue and underlined text (the default formatting in Microsoft Word), although plain black text is also acceptable. Be consistent in your formatting choice for DOIs and URLs throughout your reference list. (Note that this guidance has changed from APA 6 where all hyperlink formatting was removed, and no active links were included. In APA 6, the URLs appeared in plain, black type and did not link out from the document.)
Departments.
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Published on June 24, 2022 by Jack Caulfield . Revised on November 7, 2022.
A citation style is a set of guidelines on how to cite sources in your academic writing . You always need a citation whenever you quote , paraphrase , or summarize a source to avoid plagiarism . How you present these citations depends on the style you follow. Scribbr’s citation generator can help!
Different styles are set by different universities, academic associations, and publishers, often published in an official handbook with in-depth instructions and examples.
There are many different citation styles, but they typically use one of three basic approaches: parenthetical citations , numerical citations, or note citations.
Parenthetical citations
Numerical citations
Note citations
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Types of citation: parenthetical, note, numerical, which citation style should i use, parenthetical citation styles, numerical citation styles, note citation styles, frequently asked questions about citation styles.
The clearest identifying characteristic of any citation style is how the citations in the text are presented. There are three main approaches:
Citation styles also differ in terms of how you format the reference list or bibliography entries themselves (e.g., capitalization, order of information, use of italics). And many style guides also provide guidance on more general issues like text formatting, punctuation, and numbers.
In most cases, your university, department, or instructor will tell you which citation style you need to follow in your writing. If you’re not sure, it’s best to consult your institution’s guidelines or ask someone. If you’re submitting to a journal, they will usually require a specific style.
Sometimes, the choice of citation style may be left up to you. In those cases, you can base your decision on which citation styles are commonly used in your field. Try reading other articles from your discipline to see how they cite their sources, or consult the table below.
Discipline | Typical citation style(s) |
---|---|
Economics | |
Engineering & IT | |
Humanities | ; ; |
Law | ; |
Medicine | ; ; |
Political science | |
Psychology | |
Sciences | ; ; ; ; |
Social sciences | ; ; ; |
The American Anthropological Association (AAA) recommends citing your sources using Chicago author-date style . AAA style doesn’t have its own separate rules. This style is used in the field of anthropology.
AAA reference entry | Clarke, Kamari M. 2013. “Notes on Cultural Citizenship in the Black Atlantic World.” 28, no. 3 (August): 464–474. https://www.jstor.org/stable/43898483. |
AAA in-text citation | (Clarke 2013) |
APA Style is defined by the 7th edition of the Publication Manual of the American Psychological Association . It was designed for use in psychology, but today it’s widely used across various disciplines, especially in the social sciences.
Wagemann, J. & Weger, U. (2021). Perceiving the other self: An experimental first-person account of nonverbal social interaction. , (4), 441–461. https://doi.org/10.5406/amerjpsyc.134.4.0441 | |
(Wagemann & Weger, 2021) |
The citation style of the American Political Science Association (APSA) is used mainly in the field of political science.
APSA reference entry | Ward, Lee. 2020. “Equity and Political Economy in Thomas Hobbes.” , 64 (4): 823–35. doi: 10.1111/ajps.12507. |
APSA in-text citation | (Ward 2020) |
The citation style of the American Sociological Association (ASA) is used primarily in the discipline of sociology.
ASA reference entry | Kootstra, Anouk. 2016. “Deserving and Undeserving Welfare Claimants in Britain and the Netherlands: Examining the Role of Ethnicity and Migration Status Using a Vignette Experiment.” 32(3): 325–338. doi:10.1093/esr/jcw010. |
ASA in-text citation | (Kootstra 2016) |
Chicago author-date style is one of the two citation styles presented in the Chicago Manual of Style (17th edition). It’s used mainly in the sciences and social sciences.
Encarnação, João, and Gonçalo Calado. 2018. “Effects of Recreational Diving on Early Colonization Stages of an Artificial Reef in North-East Atlantic.” 22, no. 6 (December): 1209–1216. https://www.jstor.org/stable/45380397. | |
(Encarnação and Calado 2018) |
The citation style of the Council of Science Editors (CSE) is used in various scientific disciplines. It includes multiple options for citing your sources, including the name-year system.
CSE name-year reference entry | Graham JR. 2019. The structure and stratigraphical relations of the Lough Nafooey Group, South Mayo. Irish Journal of Earth Sciences. 37: 1–18. |
CSE name-year citation | (Graham 2019) |
Harvard style is often used in the field of economics. It is also very widely used across disciplines in UK universities. There are various versions of Harvard style defined by different universities—it’s not a style with one definitive style guide.
Hoffmann, M. (2016) ‘How is information valued? Evidence from framed field experiments’, , 126(595), pp. 1884–1911. doi:10.1111/ecoj.12401. | |
(Hoffmann, 2016) |
Check out Scribbr’s Harvard Reference Generator
MLA style is the official style of the Modern Language Association, defined in the MLA Handbook (9th edition). It’s widely used across various humanities disciplines. Unlike most parenthetical citation styles, it’s author-page rather than author-date.
Davidson, Clare. “Reading in Bed with .” , vol. 55, no. 2, Apr. 2020, pp. 147–170. https://doi.org/10.5325/chaucerrev.55.2.0147. | |
(Davidson 155) |
The American Chemical Society (ACS) provides guidelines for a citation style using numbers in superscript or italics in the text, corresponding to entries in a numbered reference list at the end. It is used in chemistry.
ACS reference entry | 1. Hutchinson, G.; Alamillo-Ferrer, C.; Fernández-Pascual, M.; Burés, J. Organocatalytic Enantioselective α-Bromination of Aldehydes with -Bromosuccinimide. , 87, 7968–7974. |
The American Medical Association ( AMA ) provides guidelines for a numerical citation style using superscript numbers in the text, which correspond to entries in a numbered reference list. It is used in the field of medicine.
1. Jabro JD. Predicting saturated hydraulic conductivity from percolation test results in layered silt loam soils. . 2009;72(5):22–27. |
CSE style includes multiple options for citing your sources, including the citation-name and citation-sequence systems. Your references are listed alphabetically in the citation-name system; in the citation-sequence system, they appear in the order in which you cited them.
CSE citation-sequence or citation-name reference entry | 1. Nell CS, Mooney KA. Plant structural complexity mediates trade-off in direct and indirect plant defense by birds. Ecology. 2019;100(10):1–7. |
The Institute of Electrical and Electronics Engineers ( IEEE ) provides guidelines for citing your sources with IEEE in-text citations that consist of numbers enclosed in brackets, corresponding to entries in a numbered reference list. This style is used in various engineering and IT disciplines.
IEEE reference entry | 1. J. Ive, A. Max, and F. Yvon, “Reassessing the proper place of man and machine in translation: A pre-translation scenario,” , vol. 32, no. 4, pp. 279–308, Dec. 2018, doi: 10.1007/s10590-018-9223-9. |
The National Library of Medicine (NLM) citation style is defined in Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers (2nd edition).
NLM reference entry | 1. Hage J, Valadez JJ. Institutionalizing and sustaining social change in health systems: the case of Uganda. Health Policy Plan. 2017 Nov;32(9):1248–55. doi:10.1093/heapol/czx066. |
Vancouver style is also used in various medical disciplines. As with Harvard style, a lot of institutions and publications have their own versions of Vancouver—it doesn’t have one fixed style guide.
Vancouver reference entry | 1. Bute M. A backstage sociologist: Autoethnography and a populist vision. Am Soc. 2016 Mar 23; 47(4):499–515. Available from: https://link.springer.com/article/10.1007/s12108-016-9307-z doi:10.1007/s12108-016-9307-z |
The AI-powered Citation Checker helps you avoid common mistakes such as:
The Bluebook: A Uniform System of Citation is the main style guide for legal citations in the US. It’s widely used in law, and also when legal materials need to be cited in other disciplines.
Bluebook footnote citation | David E. Pozen, , 165, U. P🇦. L. R🇪🇻. 1097, 1115 (2017). |
Chicago notes and bibliography is one of the two citation styles presented in the Chicago Manual of Style (17th edition). It’s used mainly in the humanities.
Best, Jeremy. “Godly, International, and Independent: German Protestant Missionary Loyalties before World War I.” 47, no. 3 (September 2014): 585–611. https://doi.org/10.1017/S0008938914001654. | |
1. Jeremy Best, “Godly, International, and Independent: German Protestant Missionary Loyalties before World War I,” 47, no. 3 (September 2014): 599. https://doi.org/10.1017/S0008938914001654. |
The Oxford University Standard for the Citation of Legal Authorities ( OSCOLA ) is the main legal citation style in the UK (similar to Bluebook for the US).
OSCOLA footnote citation | 1. Chris Thornhill, ‘The Mutation of International Law in Contemporary Constitutions: Thinking Sociologically about Political Constitutionalism’ [2016] MLR 207. |
There are many different citation styles used across different academic disciplines, but they fall into three basic approaches to citation:
Check if your university or course guidelines specify which citation style to use. If the choice is left up to you, consider which style is most commonly used in your field.
Other more specialized styles exist for certain fields, such as Bluebook and OSCOLA for law.
The most important thing is to choose one style and use it consistently throughout your text.
A scientific citation style is a system of source citation that is used in scientific disciplines. Some commonly used scientific citation styles are:
APA format is widely used by professionals, researchers, and students in the social and behavioral sciences, including fields like education, psychology, and business.
Be sure to check the guidelines of your university or the journal you want to be published in to double-check which style you should be using.
MLA Style is the second most used citation style (after APA ). It is mainly used by students and researchers in humanities fields such as literature, languages, and philosophy.
If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.
Caulfield, J. (2022, November 07). Citation Styles Guide | Examples for All Major Styles. Scribbr. Retrieved August 5, 2024, from https://www.scribbr.com/citing-sources/citation-styles/
Other students also liked, apa vs. mla | the key differences in format & citation, the basics of in-text citation | apa & mla examples, how to avoid plagiarism | tips on citing sources, what is your plagiarism score.
A reference list entry generally has four elements: the author, date, title, and source. Each element answers a question:
Answering these four questions will help you create a reference entry for any type of work, even if you do not see a specific example in the Publication Manual that matches it. Consistency in reference formatting allows readers to understand the types of works you consulted and the important reference elements with ease.
To learn more about content and format of the author, date, title, and source, visit the page on reference elements .
This figure shows the first page of a journal article. The locations of the reference elements are highlighted with different colors and callouts, and the same colors are used in the reference list entry to show how the entry corresponds to the source.
Additionally, the in-text citation for a work corresponds to the reference list entry . For example, the in-text citation for the work in the example is Botto and Rochat (2018) or (Botto & Rochat, 2018).
View the reference examples to see the basic principles of references in action.
The basic principles of reference list entries are covered in the seventh edition APA Style manuals in the Publication Manual Sections 9.4 to 9.6 and the Concise Guide Sections 9.4 to 9.6
Use punctuation marks in reference list entries to group information.
Some works contain suggested citations. These citations often contain the information necessary to write an APA Style reference but need editing for style. For example, you may need to change the capitalization of the title or the punctuation between elements. You may also need to put elements in the proper order of author, date, title, and source.
COMMENTS
Journal Articles. References to journal articles usually include the author's name, title of the article, name of the journal, volume and issue number, page numbers, and publication date. Example: Johnson, T. (2021). The Impact of Social Media on Mental Health. Journal of Psychology, 32 (4), 87-94.
Reference in research papers: A reference is a detailed description of the source of information that you want to give credit to via a citation. The references in research papers are usually in the form of a list at the end of the paper. The essential difference between citations and references is that citations lead a reader to the source of ...
References provide the information necessary for readers to identify and retrieve each work cited in the text. Check each reference carefully against the original publication to ensure information is accurate and complete. Accurately prepared references help establish your credibility as a careful researcher and writer. Consistency in reference ...
How to write references in research papers. If the citations follow the Harvard system, references in a research papers are sorted alphabetically by the last name of the first author; if the citations follow the Vancouver system, the references are arranged by numbers: the reference corresponding to the first numbered citation is numbered 1 ...
APA Style is widely used by students, researchers, and professionals in the social and behavioral sciences. Scribbr's APA Citation Generator automatically generates accurate references and in-text citations for free.. This citation guide outlines the most important citation guidelines from the 7th edition APA Publication Manual (2020). Scribbr also offers free guides for the older APA 6th ...
At college level, you must properly cite your sources in all essays, research papers, and other academic texts (except exams and in-class exercises). Add a citation whenever you quote, paraphrase, or summarize information or ideas from a source. You should also give full source details in a bibliography or reference list at the end of your text.
Sources that you only consulted; Personal communications (e.g., emails or phone calls); General mentions of websites or periodicals; Common knowledge. Annotated bibliography. For some student papers, it's common to describe or evaluate the source in an annotation. These annotations are placed on a new line below the corresponding reference entry.
1. APA Referencing Basics: Reference List. A reference list is a complete list of references used in a piece of writing including the author name, date of publication, title and more. An APA reference list must: Be on a new page at the end of the document. Be centred
When you cite a source with up to three authors, cite all authors' names. For four or more authors, list only the first name, followed by ' et al. ': Number of authors. In-text citation example. 1 author. (Davis, 2019) 2 authors. (Davis and Barrett, 2019) 3 authors.
If a single reference points to more than one source, list the source numbers in a series, for example, as 1,3,6. Use a dash to separate more than two numbers as 1−3, if these form a sequence. However, use a comma to separate two numbers as 1,3 (without space in between), if these do not form a sequence.
This guide contains examples of common types of APA Style references. Section numbers indicate where to find the examples in the Publication Manual of the American Psychological Association (7th ed.). More information on references and reference examples are in Chapters 9 and 10 of the Publication Manual as well as the Concise Guide to APA ...
In-text citations are quick references to your sources. In Harvard referencing, you use the author's surname and the date of publication in brackets. Up to three authors are included in a Harvard in-text citation. If the source has more than three authors, include the first author followed by ' et al. '.
These instructional pages offer examples of reference list entries for different types of sources as well as guidance on the variations for citing online materials using doi numbers and URLs. ... Sometimes, researchers refer to these types of reports as gray literature, and white papers are a type of this literature. See APA 7, Section 10.4 for ...
Reference List: Basic Rules. This resourse, revised according to the 7 th edition APA Publication Manual, offers basic guidelines for formatting the reference list at the end of a standard APA research paper. Most sources follow fairly straightforward rules. However, because sources obtained from academic journals carry special weight in research writing, these sources are subject to special ...
First, you must include a parenthetical citation in the text of your paper that indicates the source of a particular quotation, paraphrased statement or idea, or fact; second, you must include a list of references at the end of your paper that enables readers to locate the sources you have used. You can read more about MLA style here and APA ...
Organizing the References. An initial extensive literature search helps in identifying the appropriate research question, drafting the study protocol, supervising ongoing research, analyzing the results, and writing the paper.[3,7] Although references are displayed at the end of the article/after the text of the article, they should not be actually written after completing the text of the ...
Scholarship is a conversation and scholars use citations not only to give credit to original creators and thinkers, but also to add strength and authority to their own work.By citing their sources, scholars are placing their work in a specific context to show where they "fit" within the larger conversation.Citations are also a great way to leave a trail intended to help others who may want ...
Basic format. In an APA reference, the author's name is inverted: start with the last name, followed by a comma and the initials, separated by a period and space. Treat infixes, such as "Van" or "De", as part of the last name. Don't include personal titles such as Ph.D. or Dr., but do include suffixes. Smith, T. H. J.
Potentially appropriate: books, encyclopedias, and other scholarly works. Another potential source that you might use when writing a research paper is a book, encyclopedia, or an official online source (such as demographic data drawn from a government website). When relying on such sources, it is important to carefully consider its accuracy and ...
At the end of the entry, place the date of the original publication inside parenthesis along with the note "original work published.". For in-text citations of republished work, use both dates in the parenthetical citation, original date first with a slash separating the years, as in this example: Freud (1923/1961).
More than 100 reference examples and their corresponding in-text citations are presented in the seventh edition Publication Manual.Examples of the most common works that writers cite are provided on this page; additional examples are available in the Publication Manual.. To find the reference example you need, first select a category (e.g., periodicals) and then choose the appropriate type of ...
There are three main approaches: Parenthetical citations: You include identifying details of the source in parentheses in the text—usually the author's last name and the publication date, plus a page number if relevant ( author-date ). Sometimes the publication date is omitted ( author-page ). Numerical citations: You include a number in ...
Use punctuation marks (usually commas or parentheses) between parts of the same reference element. For example, in a reference for a journal article, use a comma between each author's last name and initials and between different authors' names, between the journal name and the volume number, and between the journal issue number and the page ...