Corey, G. (1991). Manual for theory and practice of counselling and psychotherapy (4th ed.). Brooks/cole.
Chicago-Zitierstil (17. Ausg.)Corey, Gerald. Manual for Theory and Practice of Counselling and Psychotherapy. 4th ed. California: Brooks/cole, 1991.
MLA-Zitierstil (9. Ausg.)Corey, Gerald. Manual for Theory and Practice of Counselling and Psychotherapy. 4th ed. Brooks/cole, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.