APA (7th ed.) Zitazioa

Corey, G. (1990). Theory and practice of counselling and psychotherapy (3rd ed.). Brooks/cole.

Chicago Style (17th ed.) Zitazioa

Corey, Gerald. Theory and Practice of Counselling and Psychotherapy. 3rd ed. California: Brooks/cole, 1990.

MLA (9th ed.) Zitazioa

Corey, Gerald. Theory and Practice of Counselling and Psychotherapy. 3rd ed. Brooks/cole, 1990.