Mah, Ronald <br/><br/>
Difficult behavior in early childhood :  positive discipline for Pre-3 classrooms and beyond / 
Ronald Mah 
 - London :  Sage Pub,  c2007 
 - xi, 158 p. ;  26 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>1412937140 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behavior modification--United States<br/>Early childhood education--United States<br/>Discipline