Snijder, Tom A B <br/><br/>
Multillevel analysis :  Introduction to basic and advanced multilevel modeling/ 
Tom A B Snijders & Roel J Bosker 
 - 2nd ed. 
 - London  Sage  2012 
 - xi, 354p.  Includes index 
<br/><br/><label>ISBN: </label>978-1949202008 
<br/><br/><label>LC Class. No.: </label>QA279  / .S55 2012