Crimmins, D. B. (2007). Positive strategies for students with behavior problems. P.H. Brookes Pub.
Cita Chicago (17th ed.)Crimmins, Daniel B. Positive Strategies for Students with Behavior Problems. Baltimore: P.H. Brookes Pub, 2007.
Cita MLA (9th ed.)Crimmins, Daniel B. Positive Strategies for Students with Behavior Problems. P.H. Brookes Pub, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.