APA (7th ed.) Citation

Johnson, R. E. (1971). Existential man: The challenge of psychotherapy. Pergamon Press.

Chicago Style (17th ed.) Citation

Johnson, Richard E. Existential Man: The Challenge of Psychotherapy. New York [u.a.]: Pergamon Press, 1971.

MLA (9th ed.) Citation

Johnson, Richard E. Existential Man: The Challenge of Psychotherapy. Pergamon Press, 1971.