APA (7th ed.) Citation

Walen, S. R., DiGiuseppe, R., & Wessler, R. L. (1982). RET-Training: Einführung in die Praxis der rational-emotiven Therapie. Pfeiffer.

Chicago Style (17th ed.) Citation

Walen, Susan R., Raymond DiGiuseppe, and Richard L. Wessler. RET-Training: Einführung in Die Praxis Der Rational-emotiven Therapie. München: Pfeiffer, 1982.

MLA (9th ed.) Citation

Walen, Susan R., et al. RET-Training: Einführung in Die Praxis Der Rational-emotiven Therapie. Pfeiffer, 1982.