Cita APA (7th ed.)
Freud, S., & Freud sigmund. (1960). Group psychology and the analysis of the ego. Banam.
Cita Chicago (17th ed.)
Freud, Sigmund, i Freud sigmund. Group Psychology and the Analysis of the Ego. New York: Banam, 1960.
Cita MLA (9th ed.)
Freud, Sigmund, i Freud sigmund. Group Psychology and the Analysis of the Ego. Banam, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.