APA (7th ed.) Citation

Freud, S., Zweig, A., & Freud, E. L. (1968). Briefwechsel. S. Fischer.

Chicago Style (17th ed.) Citation

Freud, Sigmund, Arnold Zweig, and Ernst L. Freud. Briefwechsel. Frankfurt am Main: S. Fischer, 1968.

MLA (8th ed.) Citation

Freud, Sigmund, et al. Briefwechsel. S. Fischer, 1968.

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