"Magretta, Joan" <br/><br/>
Understanding Michael Porter: the essential guide to competition and strategy 

 - Boston  Harvard Business Review Press  2012 
 - 236p. 
<br/><br/><label>ISBN: </label>9781422160596 
<br/><br/><label>Subjects--Topical Terms: </label><br/>"Porter, Michael E."
<br/><br/><label>Dewey Class. No.: </label>658.4012 MAG