APA (7th ed.) Zitazioa

Frankl, V. E. (1967). Psychotherapy and existentialism: Selected papers on logotherapy. Touchstone.

Chicago Style (17th ed.) Zitazioa

Frankl, Viktor E. Psychotherapy and Existentialism: Selected Papers on Logotherapy. New York: Touchstone, 1967.

MLA (9th ed.) Zitazioa

Frankl, Viktor E. Psychotherapy and Existentialism: Selected Papers on Logotherapy. Touchstone, 1967.