APA (7e ed.) Bronvermelding

Carkhuff, R. R., & Anthony, W. A. (1979). The skills of helping: An introduction to counseling skills. Human Resource Development Press.

Chicago (17e ed.) Bronvermelding

Carkhuff, Robert R., en William Alan Anthony. The Skills of Helping: An Introduction to Counseling Skills. Amherst, Mass.: Human Resource Development Press, 1979.

MLA (9e ed.) Bronvermelding

Carkhuff, Robert R., en William Alan Anthony. The Skills of Helping: An Introduction to Counseling Skills. Human Resource Development Press, 1979.