Frankl, V. E. (1967). Psychotherapy and existentialism: Selected papers on logotherapy. Touchstone.
Lua i Stíl Chicago (17ú heag.)Frankl, Viktor E. Psychotherapy and Existentialism: Selected Papers on Logotherapy. New York: Touchstone, 1967.
Lua MLA (9ú heag.)Frankl, Viktor E. Psychotherapy and Existentialism: Selected Papers on Logotherapy. Touchstone, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.