Kothari, C R. <br/><br/>
Research methodology :  methods and techniques. 

 - 2nd ed. 
 - New Delhi :  New Age International (P) Limited, Publishers,  2004. 
 - xvi, 401 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9788122415223 
<br/><br/><label>Dewey Class. No.: </label>001.42 KOT