APA (7th ed.) Zitazioa

Freud, S., & Freud sigmund. (1960). Group psychology and the analysis of the ego. Banam.

Chicago Style (17th ed.) Zitazioa

Freud, Sigmund, eta Freud sigmund. Group Psychology and the Analysis of the Ego. New York: Banam, 1960.

MLA (9th ed.) Zitazioa

Freud, Sigmund, eta Freud sigmund. Group Psychology and the Analysis of the Ego. Banam, 1960.