APA (7th ed.) Citation

Carkhuff, R. R. (1980). The art of helping IV. Human Resource Development Press.

Chicago Style (17th ed.) Citation

Carkhuff, Robert R. The Art of Helping IV. Amherst, Mass.: Human Resource Development Press, 1980.

MLA (8th ed.) Citation

Carkhuff, Robert R. The Art of Helping IV. Human Resource Development Press, 1980.

Warning: These citations may not always be 100% accurate.