Corey, G. F. (1985). Theory and practice of group counselling (2nd ed.). Brooks/Cole Pub.
Chicago-viite (17. p.)Corey, Gerald F. Theory and Practice of Group Counselling. 2nd ed. Pacific Grove, Calif: Brooks/Cole Pub, 1985.
MLA-viite (9. p.)Corey, Gerald F. Theory and Practice of Group Counselling. 2nd ed. Brooks/Cole Pub, 1985.
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