APA (7th ed.) Zitazioa
Corey, G., Callanan, P., & Corey, M. S. (1984). Issues and ethics in the helping professions (2nd ed.). Brooks.
Chicago Style (17th ed.) Zitazioa
Corey, Gerald, Patrick Callanan, eta Marianne S. Corey. Issues and Ethics in the Helping Professions. 2nd ed. Monterey: Brooks, 1984.
MLA (9th ed.) Zitazioa
Corey, Gerald, et al. Issues and Ethics in the Helping Professions. 2nd ed. Brooks, 1984.
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