APA (7th ed.) Citation

Sundel, M., & Sundel, S. S. (1975). Behavior modification in the human services: A systematic introduction to concepts and applications. Wiley.

Chicago Style (17th ed.) Citation

Sundel, Martin, and Sandra S. Sundel. Behavior Modification in the Human Services: A Systematic Introduction to Concepts and Applications. New York: Wiley, 1975.

MLA (9th ed.) Citation

Sundel, Martin, and Sandra S. Sundel. Behavior Modification in the Human Services: A Systematic Introduction to Concepts and Applications. Wiley, 1975.