APA (7th ed.) Citation

Walen, S. R., DiGiuseppe, R., & Wessler, R. L. (1980). A practitioner's guide to rational-emotive therapy. Oxford Univ.Pr.

Chicago Style (17th ed.) Citation

Walen, Susan R., Raymond DiGiuseppe, and Richard L. Wessler. A Practitioner's Guide to Rational-emotive Therapy. New York: Oxford Univ.Pr, 1980.

MLA (9th ed.) Citation

Walen, Susan R., et al. A Practitioner's Guide to Rational-emotive Therapy. Oxford Univ.Pr, 1980.