Kothari, C. R <br/><br/>
Research methodology   : methods and techniques 
/ by C. R. Kothari 
 - 3rd ed. 
 - New Delhi;  New Age International (P) Ltd.,  2013. 
 - xx; 449p 
<br/><br/><label>ISBN: </label>9788122436235 
<br/><br/><label>Dewey Class. No.: </label>300.72  / KOT/R