Porter Micheal E <br/><br/>
Competitive advantage on nations: With a new introduction 
Porter Micheal E 
 - London  London, Macmillan press  n.a. 
 - xxxi,855 
<br/><br/><label>ISBN: </label>0-333-73642-7 
<br/><br/><label>Source: </label>Textbook