APA (7th ed.) Citation

Carkhuff, R. R. (2008). The art of helping (9th ed.). Possibilities Pub.

Chicago Style (17th ed.) Citation

Carkhuff, Robert R. The Art of Helping. 9th ed. Amherst, MA: Possibilities Pub, 2008.

MLA (9th ed.) Citation

Carkhuff, Robert R. The Art of Helping. 9th ed. Possibilities Pub, 2008.

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