Gardner, W. I. (1974). Children with learning and behavior problems: A behavior management approach. Allyn and Bacon.
Chicago-Zitierstil (17. Ausg.)Gardner, William I. Children with Learning and Behavior Problems: A Behavior Management Approach. Boston: Allyn and Bacon, 1974.
MLA-Zitierstil (9. Ausg.)Gardner, William I. Children with Learning and Behavior Problems: A Behavior Management Approach. Allyn and Bacon, 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.