Snijders T.A.B and Roel J bosken <br/><br/>
Multilevel analysis and introduction to basic and advanced multilevel modelling  

 - Los angeles  Sage  2012 
<br/><br/><label>ISBN: </label>9781849202015 
<br/><br/><label>LC Class. No.: </label>QA 278  /  .S65 2012