APA-Zitierstil (7. Ausg.)

Corey, G. (1990). Theory and practice of group counselling (3rd ed.). Brooks/Cole Publishing.

Chicago-Zitierstil (17. Ausg.)

Corey, Gerald. Theory and Practice of Group Counselling. 3rd ed. California.: Brooks/Cole Publishing, 1990.

MLA-Zitierstil (9. Ausg.)

Corey, Gerald. Theory and Practice of Group Counselling. 3rd ed. Brooks/Cole Publishing, 1990.