APA (7th ed.) Citation

Walen, S. R., DiGiuseppe, R., & Dryden, W. (1992). A practitioner's guide to rational-emotive therapy (2. ed.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Walen, Susan R., Raymond DiGiuseppe, and Windy Dryden. A Practitioner's Guide to Rational-emotive Therapy. 2. ed. New York u.a: Oxford Univ. Press, 1992.

MLA (9th ed.) Citation

Walen, Susan R., et al. A Practitioner's Guide to Rational-emotive Therapy. 2. ed. Oxford Univ. Press, 1992.