APA (7e ed.) Bronvermelding

Carkhuff,Robert. (1967). Source of gain in counseling and psychotherapy: Readings and commentry (ed.). Holt, Rinehart and Winston Inc..

Chicago (17e ed.) Bronvermelding

Carkhuff,Robert. Source of Gain in Counseling and Psychotherapy: Readings and Commentry. ed. New York: Holt, Rinehart and Winston Inc., 1967.

MLA (9e ed.) Bronvermelding

Carkhuff,Robert. Source of Gain in Counseling and Psychotherapy: Readings and Commentry. ed. Holt, Rinehart and Winston Inc., 1967.