Armstrong, Derek Lee <br/><br/>
The persona principle :  how to succeed in business with image-marketing / 
Derek Lee Armstrong and Kam Wai Yu 
 - New York :  Simon & Schuster,  1996       
 - 240 p. 
<br/><br/><label>ISBN: </label>0684802686 
<br/><br/><label>LC Class. No.: </label>1mover1Karines