APA (7th ed.) Zitazioa
Corey, G., & Corey, M. S. (1988). Issues and ethics in the helping professions (3rd ed.). Brooks/Cole.
Chicago Style (17th ed.) Zitazioa
Corey, Gerald, eta Marianne Schneider Corey. Issues and Ethics in the Helping Professions. 3rd ed. Wadsworth: Brooks/Cole, 1988.
MLA (9th ed.) Zitazioa
Corey, Gerald, eta Marianne Schneider Corey. Issues and Ethics in the Helping Professions. 3rd ed. Brooks/Cole, 1988.
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