APA (7e ed.) Bronvermelding
Carkhuff, R. R. (1969). Helping and Human Relations: A Primer for Lay and Professional Helpers: Volume I Selection and Training.
Chicago (17e ed.) Bronvermelding
Carkhuff, Robert R. Helping and Human Relations: A Primer for Lay and Professional Helpers: Volume I Selection and Training. 1969.
MLA (9e ed.) Bronvermelding
Carkhuff, Robert R. Helping and Human Relations: A Primer for Lay and Professional Helpers: Volume I Selection and Training. 1969.
Let op: Deze citaties zijn niet altijd 100% accuraat.