Cooper ,Donald R. <br/><br/>
Business Research Methods 

 - 9th ed. 
 - New Delhi.  Tata Mcgraw Hill Ed Pvt Ltd.  2011 
 - xxiii, 757 
<br/><br/><label>ISBN: </label>70620199 
<br/><br/><label>Dewey Class. No.: </label>658.0072