Tull, Donald S. <br/><br/>
Marketing research :  Measurement & method ; a text with cases / 
Donald S Tull; Del I. Hawkins. 
 - 6th ed. 
 - Upper Saddle River, N.J. :  Prentice-Hall,  1993. 
 - 863 p. :  ill ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0-02-421932-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing research