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

 - Pengquin Books, London  1999 
 - xiii,178p 
<br/><br/><label>ISBN: </label>0-14-029666-2 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Eng. Lang. & Lit.
<br/><br/><label>Dewey Class. No.: </label>155.3 deB