(1988). Progress without punishment: Effective approaches for learners with behavior problems (1. print.). Teachers College Pr.
Chicago-Zitierstil (17. Ausg.)Progress Without Punishment: Effective Approaches for Learners with Behavior Problems. 1. print. New York u.a: Teachers College Pr, 1988.
MLA-Zitierstil (9. Ausg.)Progress Without Punishment: Effective Approaches for Learners with Behavior Problems. 1. print. Teachers College Pr, 1988.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.