How to Cite an Encyclopedia in APA

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Published April 18, 2012. Updated November 3, 2020.

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Citing a print encyclopedia entry in APA (individual author)

Reference Page
Structure

F. M. (Publication year). Entry title. In Encyclopedia title. (Vol. XX, pp. XX-XX). Publisher.

Example

McGhee, K., & McKay, G. (2007). Insects. In Encyclopedia of animals (p.175). National Geographic Society.

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Note: Tertiary sources are not typically appropriate for research papers. Check with your instructor.

 

Citing an online encyclopedia entry in APA (individual author)

Reference Page
Structure

F. M. (Publication Year, Month Day). Entry title. In Encyclopedia title. Publisher. URL

Example

McGhee, K., & McKay, G. (2007). Insects. In Encyclopedia of animals. National Geographic Society. https://www.urlgoeshere.com

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Citing an online encyclopedia entry in APA (organization as author, date known)

When an organization is both the article author and publisher, only include the organization’s name in the beginning of the citation (as the author).

Reference Page
Structure

Organization Name. (Publication Year, Month Day). Entry title. In Encyclopedia Title. URL

Example

Encyclopaedia Britannica. (2008, June 27) Placental mammals. In Encyclopaedia Britannica. https://www.britannica.com/animal/placental-mammal

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Citing an online encyclopedia entry in APA (organization as author, date unknown)

When an organization is both the article author and publisher, only include the organization’s name in the beginning of the citation (as the author).

When an online article’s date is unknown, place “n.d.” for “no date” in the publications space, and add a retrieved date.

Reference Page
Structure

Organization Name. (n.d.). Entry title. In Encyclopedia Title. Retrieved Month Day, Year, from URL

Example

Encyclopaedia Britannica. (n.d.). Placental mammals. In Encyclopaedia Britannica. Retrieved June 1, 2020, from https://www.britannica.com/animal/placental-mammal

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