Bono, Edward. <br/><br/>
Six thinking hats / 
by Edward de Bono. 
 - London, New York :  Penguin Books,  2000. 
 - 177 p. : ;  20 cm. 
<br/><br/><label>ISBN: </label>0140296662 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Thought and thinking.