Sundel, M., & Sundel, S. S. (1982). Behavior modification in the human services: A systematic introduction to concepts and applications (2nd ed.). Prentice-Hall.
Chicago-Zitierstil (17. Ausg.)Sundel, Martin, und Sandra Stone Sundel. Behavior Modification in the Human Services: A Systematic Introduction to Concepts and Applications. 2nd ed. Englewood Cliffs, NJ: Prentice-Hall, 1982.
MLA-Zitierstil (9. Ausg.)Sundel, Martin, und Sandra Stone Sundel. Behavior Modification in the Human Services: A Systematic Introduction to Concepts and Applications. 2nd ed. Prentice-Hall, 1982.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.