Lancaster, Geoff & Massingham, Lester <br/><br/>
Essentials of marketing 

 - 2nd ed 
 - McGraw - Hill, London  1993 
 - 496 
<br/><br/><label>ISBN: </label>0-07707728-8 
<br/><br/><label>Dewey Class. No.: </label>658.8 Lan/Mas