De Bono, Edward,  1933- <br/><br/>
Six thinking hats / 
Edward de Bono. 
 - Rev. ed. 
 - London :  Penguin,  1999. 
 - 192 s. ;  20 cm. 
<br/><br/> Previous ed.: Harmondsworth: Viking, 1986. 
<br/><br/><label>ISBN: </label>0140296662 (pbk) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Creative thinking.<br/>Problem solving.
<br/><br/><label>Dewey Class. No.: </label>160