APA Edition Citation

Sundel, S. S. S., & Sundel, M. (1993). Behavior modification in the human services ; A systematic introduction to concepts and applications (3rd.). Sage.

Chicago Edition Citation

Sundel, Sundra S Sundel, and Martin Sundel. Behavior Modification in the Human Services ; A Systematic Introduction to Concepts and Applications. 3rd. London: Sage, 1993.

MLA Edition Citation

Sundel, Sundra S Sundel, and Martin Sundel. Behavior Modification in the Human Services ; A Systematic Introduction to Concepts and Applications. 3rd. Sage, 1993.