APA Citation has been broken down into three sections: Print Sources, Online Sources, and Online Periodicals. For further examples and instruction, ask a teacher or librarian, stop by the Academic Resource Center, or visit the Purdue Online Writing Lab. OWL's offers several pages of helpful resources that range from Basic Rules to more specific citation examples.
Basic Book Format:
Author. Last, first initial. (Date). Title (italicized). City of publication, State/Country: Publisher.
(In the case of multiple authors, all are noted – separated by commas, with “&” sign before final author’s last name.)
Davis, R. E. (2006). Modern chemistry. Orlando: Holt, Rinehart and Winston.
Scholarly Journal (paginated by issue):
Baelish, P. (1973). King’s Landing: A geopolitical analysis of Machiavellian machinations in Westeros. Seven Kingdoms
Studies in Diplomacy, 15(1), 41–50.
West, K. (2009, September 13). I’ma let you finish. Los Angeles Times, p. A1.
In APA citation, online sources often include what are known as DOIs, or digital object identifiers. If a DOI is available, it is used in place of a URL. The DOI is a serial number that identifies the source regardless of URL changes, and is often found on the first page of an online source.
Library of Congress. (2015). Woody Guthrie and the Archive of American Folk Song: Correspondence, 1940-1950. Retrieved from US LOC website
Lopes, P. (2009). Demanding respect : The evolution of the American comic book. Philadelphia, PA, USA: Temple University Press. Retrieved from
In APA periodical citation, authors are named by their last name followed by initials; the publication year goes between parentheses and is followed by a period. Only the first word and proper nouns are capitalized for article titles. Periodical titles are written in title case and followed by the volume number, which, with the title, is also italicized.
Scholarly Journal Article from a Library Database:
Siegel, F. (1992). Clown Politics: report on the International Clown-Theatre Congress. TDR (1988-), 36(2), 182-186. Retrieved May 29, 2015,
Rees, C. E., & Monrouxe, L. V. (2010). “I should be lucky ha ha ha ha”: The construction of power, identity and gender through laughter within
medical workplace learning encounters. Journal of Pragmatics, 42(12), 3384-3399. doi:10.1016/j.pragma.2010.05.004
Online Magazine/Newspaper Article:
Piggy, M. (2004). Of frogs and men. Nature. Retrieved from http://www.nature.com/articles/frogs_and_men
Stokstad, E. (2004). Loss of dung beetles puts ecosystems in deep doo-doo. Science, 305(5688), 1230.