Strategic management : building and sustaining competitive advantage 
Pitts, Robert A. 
 - Fourth edition. 
 -  Thomson South Western.  2006 
 - xviii, 538 pages. 
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<br/><br/><label>ISBN: </label>0-324-22621-7 
<br/><br/><label>Dewey Class. No.: </label>658.4012 P68S 2006