Boyd, Harper B. <br/><br/>
Marketing research :  text and cases / 
by Harper W. Boyd, Ralph Westfall, Stanley F. Stasch. 
 - 6th ed. 
 - Homewood, IL :  Irwin,  1985. 
 - xv, 836 p. : 
<br/><br/><label>ISBN: </label>0256031835 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing research.