APA (7th ed.) Zitazioa
Corey, G., Callanan, P., Corey, C., & Corey, M. S. (2019). Issues and ethics in the helping professions (10th ed.). Cengage.
Chicago Style (17th ed.) Zitazioa
Corey, Gerald, Patrick Callanan, Cindy Corey, eta Marianne Schneider Corey. Issues and Ethics in the Helping Professions. 10th ed. Australia: Cengage, 2019.
MLA (9th ed.) Zitazioa
Corey, Gerald, et al. Issues and Ethics in the Helping Professions. 10th ed. Cengage, 2019.
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