Dyfyniad APA

Corey, G. (2009). Case approach to counseling and psychotherapy (7th ed.). Thomson-Brooks/Cole.

Dyfyniad Arddull Chicago

Corey, Gerald. Case Approach to Counseling and Psychotherapy. 7th ed. Australia ; [Belmont, CA] United States: Thomson-Brooks/Cole, 2009.

Dyfyniad MLA

Corey, Gerald. Case Approach to Counseling and Psychotherapy. 7th ed. Thomson-Brooks/Cole, 2009.

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