APA (7th ed.) Citation

Kanfer, F. H. (1975). Helping people change: A textbook of methods. Pergamon Press.

Chicago Style (17th ed.) Citation

Kanfer, Frederick H. Helping People Change: A Textbook of Methods. New York, NY: Pergamon Press, 1975.

MLA (9th ed.) Citation

Kanfer, Frederick H. Helping People Change: A Textbook of Methods. Pergamon Press, 1975.