APA (7th ed.) Zitazioa

Gibson, R. L., & Mitchell, M. H. (2008). Introduction to counselling and guidance (7th ed.). Prentice Hall.

Chicago Style (17th ed.) Zitazioa

Gibson, Robert L., eta Marianne H. Mitchell. Introduction to Counselling and Guidance. 7th ed. New Jersey: Prentice Hall, 2008.

MLA (9th ed.) Zitazioa

Gibson, Robert L., eta Marianne H. Mitchell. Introduction to Counselling and Guidance. 7th ed. Prentice Hall, 2008.