APA (7th ed.) Zitazioa

American Psychological Association & APA. (1994). Publication manual (4a. ed.). American Psychological Association.

Chicago Style (17th ed.) Zitazioa

American Psychological Association eta APA. Publication Manual. 4a. ed. Washington, D.C: American Psychological Association, 1994.

MLA (9th ed.) Zitazioa

American Psychological Association eta APA. Publication Manual. 4a. ed. American Psychological Association, 1994.