Ries Al <br/><br/>
Positioning 

 -  "McGraw-Hill, New York"  2001 
 - 213 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0071373586 
<br/><br/><label>Dewey Class. No.: </label>659.1  / RIE/TRO