APA (7th ed.) Zitazioa

May, R. (1967). The art of counseling: A practical guide... Abingdon press.

Chicago Style (17th ed.) Zitazioa

May, Rollo. The Art of Counseling: A Practical Guide... Nashville: Abingdon press, 1967.

MLA (9th ed.) Zitazioa

May, Rollo. The Art of Counseling: A Practical Guide... Abingdon press, 1967.