Heck, Ronald H. <br/><br/>
An introduction to multilevel modeling techniques / 
Ronald H. Heck and Scott L. Thomas 
 - 2nd ed. 
 - New York :  Routledge,  2009 
 - xi, 268 p. :  ill. ;  24 cm. 
 - Quantitative methodology series .
<br/><br/>Includes bibliographical references (p. 252-259) and indexes 
<br/><br/><label>ISBN: </label>9781841697550 (hbk.) :  RM246.11 9781841697567 (pbk.) 
<br/><br/><label>LCCN: </label>2008-006919 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Mathematical models<br/>Social sciences--Research--Mathematical models