APA (7th ed.) Citation

Freud, S. (1975). Group psychology and the analysis of the ego. Norton.

Chicago Style (17th ed.) Citation

Freud, Sigmund. Group Psychology and the Analysis of the Ego. New York: Norton, 1975.

MLA (9th ed.) Citation

Freud, Sigmund. Group Psychology and the Analysis of the Ego. Norton, 1975.

Warning: These citations may not always be 100% accurate.