kumar,Ranjit <br/><br/>
Research methodology 

 - 2nd 
 - India  Dorling Kindersley (India) Pv  t. Ltd.    2007 
 - xix, 331 p 
<br/><br/><label>ISBN: </label>8131704963 
<br/><br/><label>Dewey Class. No.: </label>1.42