Mah, Ronald. <br/><br/>
Difficult behavior in early childhood :  positive discipline for PreK-3 classrooms and beyond / 
Ronald Mah. 
 - Thousand Oaks, Calif. :  Corwin Press,  2007. 
 - 158 p. :  ill. 
<br/><br/>HKBU library 
<br/><br/> YT2025 M09 
<br/><br/><label>ISBN: </label>1412937159 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behavior modification--United States.<br/>Early childhood education--United States.<br/>Discipline.
<br/><br/><label>LC Class. No.: </label>LB1060.2  / M214 D 2007