APA (7th ed.) Citation

Goldstein, A. P., & Kanfer, F. H. (1991). Helping people change: A textbook of methods (4th ed.). Pergamon Press.

Chicago Style (17th ed.) Citation

Goldstein, Arnold P., and Frederick H. Kanfer. Helping People Change: A Textbook of Methods. 4th ed. New York: Pergamon Press, 1991.

MLA (9th ed.) Citation

Goldstein, Arnold P., and Frederick H. Kanfer. Helping People Change: A Textbook of Methods. 4th ed. Pergamon Press, 1991.