APA aipamena

American, P. A. (2011). Publication Manual of the american psycological association. APA.

Chicago Style aipamena

American, Psychological Association. Publication Manual of the American Psycological Association. APA, 2011.

MLA aipamena

American, Psychological Association. Publication Manual of the American Psycological Association. APA, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.