APA (7th ed.) Citation

Frankl, V. E., Crumbauch, J. C., Gerz, H. O., & Maholick, L. T. (1967). Psychotherapy and existentialism: Selected papers on logotherapy. Simon and Schuster.

Chicago Style (17th ed.) Citation

Frankl, Viktor Emil, James C. Crumbauch, Hans O. Gerz, and Leonard T. Maholick. Psychotherapy and Existentialism: Selected Papers on Logotherapy. New York: Simon and Schuster, 1967.

MLA (9th ed.) Citation

Frankl, Viktor Emil, et al. Psychotherapy and Existentialism: Selected Papers on Logotherapy. Simon and Schuster, 1967.