Wikipedia:Citing Wikipedia

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Citing Wikipedia

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Frequently, people want to know how to cite Wikipedia in other works.

As with any source, especially those of unknown authorship, you should be wary and independently verify the accuracy of Wikipedia information if possible. For many purposes, but particularly in academia, Wikipedia may not be considered an acceptable source,[1] indeed, some professors and teachers may throw Wikipedia sourced material away out of hand. This is especially true when it is used uncorroborated. We advise special caution when using Wikipedia as a source for research projects. However, we are also confident that Wikipedia provides good overviews of most topics that it covers. See Wikipedia:Researching with Wikipedia, Caution on academic use of Wikipedia and our General Disclaimer page, for more information.

A wiki is an unusual medium, and as such doesn't conform well to the usual book-citation formats. Wiki is not paper, so you will need to use an electronic-citation format instead. The exact format will depend upon the citation guide that you are following, but here are a few general principles to consider:

  • A special citation tool is available to assist you. On the left of every article, there is a "Cite this article" link. Clicking it will bring you to a listing of relevant information, as well as automatically generated citations in several styles. Note that it is still your responsibility to ensure the citation meets all requirements.
  • You should not cite any particular author or authors for a Wikipedia article, in general. Wikipedia is collaboratively written. However, if you do need to find the list of authors of a particular article, you can check the Page history.
  • Your citation should normally list both the article title and Wikipedia, The Free Encyclopedia, much as you would for an article in a paper publication. Every article should be a separate citation.
  • Most citation styles will likely require the full article URL. You can click "Permanent link" in the toolbox at the left of this page. This lets the URL include a unique identifier such that you can tie your reference back to the exact version of the article you are referencing. It may or may not be desirable to adopt this approach, depending upon the context of your reference. This lets you show what you saw and ignore any changes made after you accessed the page. If greater brevity is desired, you can use the regular URL, or optionally just the site URL (e.g. http://en.wikipedia.org/ for an English article), because an article URL can be inferred from an article title.
  • The citation style may request the full date and time of the article revision you are using. If you use the permanent link feature, this may not be necessary. However, the date and time of the last revision can be found at the bottom of every page (above the copyright notice).

[edit] Examples

The following examples assume you are citing the Wikipedia article on Plagiarism, using the version that was submitted on July 22, 2004, at 10:55 UTC, and that you retrieved the article on August 10, 2004, except as otherwise noted.

[edit] APA style

Citation in APA style, as recommended by the American Psychological Association: [1]

  • Plagiarism. (2004, July 22). In Wikipedia, The Free Encyclopedia. Retrieved August 10, 2004, from http://en.wikipedia.org/wiki/Plagiarism

Note that in APA 5th Edition style, the following rules apply for the reference:

  • For reference books, which includes encyclopedias, dictionaries, and glossaries, the book title is preceded by the word In. It is not italicized, but the book title following it is.
  • The book title appears in sentence case. You capitalize the first word, the first word after a colon, and proper nouns.
  • The URL must go to the exact page that you reference.
  • No punctuation follows the URL.
  • The term or article title appears in the author position. Use sentence case for multiple-word terms or titles, where you capitalize the first word, the first word after a colon, and proper nouns.

The proper in-text citation is ("Plagiarism," 2006) for a paraphrased passage or ("Plagiarism," 2006, para. #) if you directly quote the material. Note that para. # represents the paragraph number in the page where the information appears. If there are multiple headings on the page, it is also acceptable to place the subheading and then a paragraph number within that heading.

For example, proper in-text citation for a direct quote of less than 40 words is:

"Plagiarism is the use of another person’s work (this could be his or her words, products or ideas) for personal advantage, without proper acknowledgment of the original work" ("Plagiarism," 2006, "Definition," para. 1).

If the quoted material is more than 40 words, use the block quote format instead.

As another example, the proper in-text citation for a paraphrased passage is:

Plagiarism is stealing the works of others ("Plagiarism," 2006).

APA Style requires that you provide a separate reference entry for each term you are citing in your paper because 1) you must provide a URL for each term that goes directly to the term, and 2) you must provide the publication date for each term separately. However, if you are discussing the "online encyclopedia" itself, not a term in the encyclopedia, you might need to reference the site itself. The proper citation of Wikipedia, the site, as referenced in APA 5th Edition Style is:

  • Wikipedia: The free encyclopedia. (2006, February 13). FL: Wikimedia Foundation, Inc. Retrieved February 13, 2006, from http://www.wikipedia.org

The in-text citation formation would be (Wikipedia, 2006).

[edit] MLA style

Citation in MLA style, as recommended by the Modern Language Association:

  • "Plagiarism." Wikipedia, The Free Encyclopedia. 22 July 2004, 10:55 UTC. Wikimedia Foundation, Inc. 10 Aug. 2004 <http://en.wikipedia.org/w/index.php?title=Plagiarism&oldid=5139350>.

Note that MLA style calls for both the date of publication (or its latest update) and the date on which the information was retrieved. According to the most recent edition of the MLA Handbook, there is now information required about any foundation involved. Also note that many schools/institutions slightly change the syntax. Another example:

  • "Plagiarism." Wikipedia: The Free Encyclopedia. 22 July 2004 <http://en.wikipedia.org/w/index.php?title=Plagiarism&oldid=5139350>.

Be sure to double check the exact syntax your institution requires.

For citation of Wikipedia as a site, use:

[edit] MHRA style

Citation in MHRA style, as recommended by the Modern Humanities Research Association:

  • Wikipedia contributors, 'Plagiarism', Wikipedia, The Free Encyclopedia, 22 July 2004, 10:55 UTC, <http://en.wikipedia.org/w/index.php?title=Plagiarism&oldid=5139350> [accessed 10 August 2004]

[edit] Chicago style

Citation in Chicago style:

  • Wikipedia contributors, "Plagiarism," Wikipedia, The Free Encyclopedia, http://en.wikipedia.org/w/index.php?title=Plagiarism&oldid=5139350 (accessed August 10, 2004).

Note that the Chicago Manual of Style states that "Well-known reference books, such as major dictionaries and encyclopedias, are normally cited in notes rather than bibliographies."

[edit] CBE/CSE Style

Citation in CBE/CSE style, as recommended by the Council of Science Editors:

  • Wikipedia contributors. Plagiarism [Internet]. Wikipedia, The Free Encyclopedia; 2004 Jul 22, 10:55 UTC [cited 2004 Aug 10]. Available from: http://en.wikipedia.org/w/index.php?title=Plagiarism&oldid=5139350.

[edit] Turabian style

The following are examples of how to cite Wikipedia articles according to A Manual for Writers of Term Papers, Theses, and Dissertations, 6th edition, by Kate L. Turabian (Chicago: University of Chicago Press, 1996). ISBN 0226816265 (cloth), ISBN 0226816273 (paper).

[edit] Disclaimer

Please understand that Turabian does not have rules that cover anything like Wikipedia. These examples are based on "reading between the lines" and assimilating rules from various not-so-similar cases that Turabian does cover. If the party to which you are submitting your paper is particularly strict, you might want to find out if they have their own adaptation of Turabian that would apply in this case. Alternately, you could always consult with the party before the deadline to make sure it's acceptable.

[edit] Notes

1"Endangered Species," in Wikipedia: The Free Encyclopedia; (Wikimedia Foundation Inc., updated 14 October 2003, 13:19 UTC) [encyclopedia on-line]; available from http://en.wikipedia.org/wiki/Endangered Species; Internet; retrieved 24 October 2006.

[edit] Bibliography

Wikipedia: The Free Encyclopedia. Wikimedia Foundation Inc. Updated 14 October 2003, 13:19 UTC. Encyclopedia on-line. Available from http://en.wikipedia.org/wiki/Endangered Species. Internet. Retrieved 5 December 2003.

(According to Turabian 6th edition, ¶9.8, for entries in the bibliograph, "the first line of each entry is flush left, and any run over lines are indented five spaces". This presentation does not follow that rule.)

[edit] Parenthetical reference

("Plagiarism," Wikipedia: The Free Encyclopedia)

or

(Wikipedia: The Free Encyclopedia, s.v. "Plagiarism")

[edit] Reference list

Plagiarism. 14 October 2003, 13:19 UTC. In Wikipedia: The Free Encyclopedia. Wikimedia Foundation Inc. Encyclopedia on-line. Available from http://en.wikipedia.org/wiki/Plagiarism. Internet. Retrieved 5 December 2003.

(Indenting is like that of the bibliography.)

[edit] Citation to Wikipedia

The Harvard Journal of Law and Technology has adopted the following format for citations to articles in Wikipedia:

  • [Signal] Wikipedia, [article], http://en.wikipedia/wiki/[article] [(optional other parenthetical)] (as of [date], [time] GMT).

Here is an example:

  • See Wikipedia, Bluebook, http://en.wikipedia/wiki/Bluebook (describing history and application of the Bluebook) (as of Mar. 21, 2006, 20:50 GMT).

This format derives from Rule 18.2 of the 18th edition of the Bluebook, though the date parenthetical differs slightly. The parenthetical here is designed to specify the exact version of the article to which the author is referring, recognizing that articles can and do change often. The date and time used should correspond exactly to the latest version listed in the article's Wikipedia history page that states the proposition for which you are citing it. Use of GMT conforms to the timestamp format used in those history entries (e.g., use 24-hour notation to avoid AM/PM).

[edit] BibTeX entry

 @misc{ wiki:###,
   author = "Wikipedia",
   title = "Plagiarism --- {W}ikipedia{,} The Free Encyclopedia",
   year = "2004",
   url = "http://en.wikipedia.org/w/index.php?title=Plagiarism&oldid=5139350",
   note = "[Online; accessed 22-July-2004]"
 }

When using the LaTeX package url (\usepackage{url} somewhere in the preamble) which tends to give much more nicely formatted web addresses, the following may be preferred:

 @misc{ wiki:###,
   author = "Wikipedia",
   title = "Plagiarism --- {W}ikipedia{,} The Free Encyclopedia",
   year = "2004",
   url = "\url{http://en.wikipedia.org/w/index.php?title=Plagiarism&oldid=5139350}",
   note = "[Online; accessed 22-July-2004]"
 }

[edit] AMA style

Citation in AMA style, as recommended by the American Medical Association: [2]

[edit] See also

[edit] References

  1. ^ Anthropology 333 syllabus from American River College. Retrieved on 2006-02-07. “Do NOT use Wikipedia or other online print encyclopedias as a source for your paper.”