Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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