Kothari, C. R. <br/><br/>
RESEARCH METHODOLOGY:  Methods and Techniques. 

 - 2 ed 
 - New Delhi:  New Age International Ltd,  [2004] 
 - xvi, 401 p 
<br/><br/><label>ISBN: </label>978-81-224-1522-3 
<br/><br/><label>Dewey Class. No.: </label>300.72