APA (7th ed.) Zitazioa
Bower , G. H. (1987). Principals of psychology today (ed.). Random House.
Chicago Style (17th ed.) Zitazioa
Bower , Gordon H. Principals of Psychology Today. ed. New York: Random House, 1987.
MLA (9th ed.) Zitazioa
Bower , Gordon H. Principals of Psychology Today. ed. Random House, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.