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

 - London :  Penguin,  1990 
 - 207 
<br/><br/><label>Subjects--Topical Terms: </label><br/>THOUGHT AND THINKING<br/>CREATIVENESS<br/>THINKING<br/>CREATIVE ABILITY
<br/><br/><label>LC Class. No.: </label>BF441  / D426S