KUMAR, Ranjit. <br/><br/>
Research methodology  a step-by-step guide for beginners  xxvii, 399p.; ill. 
Ranjit Kumar 
 -  4th ed. 
 -  Sage Publications  2014 
<br/><br/> “It includes bibliography and index”<br/><br/> 
<br/><br/><label>ISBN: </label>978-1-4462-6997-8