Tull,D.S. <br/><br/>
Marketing research / 
Tull,D.S. 
 - 6th ed 
 - New delhi:  Prentice Hall of India,  1996. 
 - xv,863p;23cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>8120309618 
<br/><br/><label>Dewey Class. No.: </label>658.8007 TUL