Johnson G <br/><br/>
Exploring Corporate strategy 
Johnson G; Scholes K 
 - ed3 
 - New York  New York, NY ,Prentice Hall Int.  1993 
 - 455p 
<br/><br/><label>ISBN: </label>0-13-296849-5 
<br/><br/><label>Source: </label>Textbook