Frankl, V. E. (2004). Man's search for meaning. Rider.
Cita Chicago (17th ed.)Frankl, Viktor E. Man's Search for Meaning. New Delhi: Rider, 2004.
Cita MLA (9th ed.)Frankl, Viktor E. Man's Search for Meaning. Rider, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.