Thomas,Gray. <br/><br/>
How to do your case study :  A guide for students and researchers / 
Gary Thomas. 
 - Los Angeles,Calif:London :  Sage,  2011. 
<br/><br/>Includes bibliographical references (P.219-224) and index. 
<br/><br/><label>ISBN: </label>978085025630 : 
<br/><br/><label>LC Class. No.: </label>H62  / .T46