APA (7th ed.) Citation

Clark, R. W., & Frank, J. A. (1981). Sigmund Freud. Fischer.

Chicago Style (17th ed.) Citation

Clark, Ronald W., and Joachim A. Frank. Sigmund Freud. Frankfurt am Main: Fischer, 1981.

MLA (9th ed.) Citation

Clark, Ronald W., and Joachim A. Frank. Sigmund Freud. Fischer, 1981.