Corey, G. (1985). Theory and practice of group counselling (2nd ed.). Brooks/Cole Publishing.
Lua i Stíl Chicago (17ú heag.)Corey, Gerald. Theory and Practice of Group Counselling. 2nd ed. California.: Brooks/Cole Publishing, 1985.
Lua MLA (9ú heag.)Corey, Gerald. Theory and Practice of Group Counselling. 2nd ed. Brooks/Cole Publishing, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.