Behavior modification in the human services :
a systematic introduction to concepts and applications /
Sandra S. Sundel & Martin Sundel.
APA Citation
Sundel, S. Stone., Sundel, M. (1993). Behavior modification in the human services: a systematic introduction to concepts and applications. 3rd ed. Newbury Park, CA: Sage Publications.
MLA Citation
Sundel, Sandra Stone, 1948-, and Martin Sundel. Behavior Modification In the Human Services: a Systematic Introduction to Concepts And Applications. 3rd ed. Newbury Park, CA: Sage Publications, 1993.
Warning: These citations may not always be complete (especially for serials).