Kothari, C R <br/><br/>
Research Methodology  : Methods and Techniques 
/ by C R Kothari 
 - 5th ed. 
 - London:  New Age International Publishers,  1985. 
 - xix, 464p.; 
<br/><br/><label>ISBN: </label>9789389802559 
<br/><br/><label>Dewey Class. No.: </label>001.42  / KOT/T