APA (7th ed.) Zitazioa
Carkhuff, R. R. (1969). Helping and human relations: A primer for lay and professional helpers. Holt, Rinehart and Winston.
Chicago Style (17th ed.) Zitazioa
Carkhuff, Robert R. Helping and Human Relations: A Primer for Lay and Professional Helpers. New York: Holt, Rinehart and Winston, 1969.
MLA (9th ed.) Zitazioa
Carkhuff, Robert R. Helping and Human Relations: A Primer for Lay and Professional Helpers. Holt, Rinehart and Winston, 1969.
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