Mangal, S. K. ; Mangal, Shubhra <br/><br/>
Research methodology in behavioural sciences  
S. K. Mangal, Shubhara Mangal. 
 - New Delhi  Prentice-Hall   2013. 
 - iv; 740 p. 
<br/><br/><label>ISBN: </label>8120348087 (paperback) 9788120348080 (paperback) 
<br/><br/><label>Source: </label> 811.00 PKR