Corey, G. (2017). Theory and practice of counselling and psychotherapy (10th edition.). Cengage Learning Asia Pte Ltd.
Chicago-viite (17. p.)Corey, Gerald. Theory and Practice of Counselling and Psychotherapy. 10th edition. Singapore: Cengage Learning Asia Pte Ltd, 2017.
MLA-viite (9. p.)Corey, Gerald. Theory and Practice of Counselling and Psychotherapy. 10th edition. Cengage Learning Asia Pte Ltd, 2017.
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