APA (7th ed.) Citation

Olson, R. G. (1962). An introduction to existentalism. Dover Pub.

Chicago Style (17th ed.) Citation

Olson, Robert Goodwin. An Introduction to Existentalism. New York: Dover Pub, 1962.

MLA (9th ed.) Citation

Olson, Robert Goodwin. An Introduction to Existentalism. Dover Pub, 1962.

Warning: These citations may not always be 100% accurate.