Cottrell,David. <br/><br/>
The Magic Question :   A Simple Question Every Leader Dreams of Answering / 
David Cottrell. 
 - New York :   McGrawHill ,  2013. 
 - v, 97p. 
<br/><br/><label>ISBN: </label>9780071806169 
<br/><br/><label>Dewey Class. No.: </label>658.4092  / COT/T