Bono, Edward de <br/><br/>
Six thinking hats 

 - England  Penguin books  1999 
 - xiii, 178p.  20cm. 
<br/><br/><label>ISBN: </label>9780140296662 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology
<br/><br/><label>Dewey Class. No.: </label>150  / BON