APA (7th ed.) Zitazioa
Gibson, R. L., & Mitchell, M. (1999). Introduction to counseling and guidance (5th ed.). Merrill.
Chicago Style (17th ed.) Zitazioa
Gibson, Robert L., eta Marianne Mitchell. Introduction to Counseling and Guidance. 5th ed. New Jersey: Merrill, 1999.
MLA (9th ed.) Zitazioa
Gibson, Robert L., eta Marianne Mitchell. Introduction to Counseling and Guidance. 5th ed. Merrill, 1999.
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