Ries, Al, <br/><br/>
Positioning :  the battle for your mind / 
Al Ries and Jack Trout. 
 - 1st edition revision. 
 - New York :  McGraw-Hill Book,  1986. 
 - 213 p. ;  20 cm. 
<br/><br/><label>ISBN: </label>0070652643 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Positioning (Advertising).