Παραπομπή σε μορφή APA (7η εκδ.)

Carkhuff, R. R. (1969). Helping and human relations: A primer for lay and professional helpers. Holt, Rinehart and Winston.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Carkhuff, Robert R. Helping and Human Relations: A Primer for Lay and Professional Helpers. New York: Holt, Rinehart and Winston, 1969.

Παραπομπή σε μορφή MLA (8th εκδ.)

Carkhuff, Robert R. Helping and Human Relations: A Primer for Lay and Professional Helpers. Holt, Rinehart and Winston, 1969.