Gaya APA

Frankl, V, E. (-1967). Psychotherapy and existentialism, selected papers on logotherapy, with contribution by James C. Crumbaugh, Hans O.Gerz & Leonar T.Maholick, (4th pr.) . (New York): Simon and Schuster.

Gaya MLA

Frankl, Viktor, E.. "Psychotherapy and existentialism, selected papers on logotherapy, with contribution by James C. Crumbaugh, Hans O.Gerz & Leonar T.Maholick, (4th pr.) ". (New York): Simon and Schuster, -1967. Buku.