APA (7th ed.) Citation

Frankl, V. E. (1997). Man's search for ultimate meaning. Insight Books.

Chicago Style (17th ed.) Citation

Frankl, Viktor E. Man's Search for Ultimate Meaning. New York [u.a.]: Insight Books, 1997.

MLA (9th ed.) Citation

Frankl, Viktor E. Man's Search for Ultimate Meaning. Insight Books, 1997.