Berenson, B. G., & Carkhuff, R. R. (1967). Sources of gain in counseling and psychotherapy: Readings and commentary. Holt, Rinehart and Winston.

Berenson, Bernard G., and Robert R. Carkhuff. Sources of Gain in Counseling and Psychotherapy: Readings and Commentary. New York: Holt, Rinehart and Winston, 1967.

Berenson, Bernard G., and Robert R. Carkhuff. Sources of Gain in Counseling and Psychotherapy: Readings and Commentary. Holt, Rinehart and Winston, 1967.