Cita APA (7a ed.)
Frankl, V. E. (1973). THE DOCTOR AND THE SOUL FROM PSYCHOTHERAPY TO LOGOTHERAPY.
Cita estilo Chicago (17a ed.)
Frankl, Viktor E. THE DOCTOR AND THE SOUL FROM PSYCHOTHERAPY TO LOGOTHERAPY. 1973.
Cita MLA (9a ed.)
Frankl, Viktor E. THE DOCTOR AND THE SOUL FROM PSYCHOTHERAPY TO LOGOTHERAPY. 1973.
警告：這些引文格式不一定是100％准確.