Dyfyniad APA

Corey, G. (1991). Manual for theory and practice of counselling and psychotherapy (4th ed.). Brooks/cole.

Dyfyniad Arddull Chicago

Corey, Gerald. Manual for Theory and Practice of Counselling and Psychotherapy. 4th ed. California: Brooks/cole, 1991.

Dyfyniad MLA

Corey, Gerald. Manual for Theory and Practice of Counselling and Psychotherapy. 4th ed. Brooks/cole, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.