Kothari, C.R. <br/><br/>
Research Methodology  : Methods and Techniques 
/ by C.R. Kothari 
 - 4th ed. 
 - New Delhi;  New Age International (P) Limited, Publishers:  2019. 
 - xxi,458p. 
<br/><br/><label>ISBN: </label>9789386649225 
<br/><br/><label>Dewey Class. No.: </label>001.42  / KOT/R