APA (7th ed.) Zitazioa

(2005). Concise Rules of APA Style. American Psychological Association.

Chicago Style (17th ed.) Zitazioa

Concise Rules of APA Style. Washington, DC: American Psychological Association, 2005.

MLA (9th ed.) Zitazioa

Concise Rules of APA Style. American Psychological Association, 2005.