Six thinking hats /
De Bono, Edward, 1933-
Six thinking hats / Edward de Bono. - Rev. ed. - London : Penguin, 1999. - 192 s. ; 20 cm.
Previous ed.: Harmondsworth: Viking, 1986.
0140296662 (pbk) :
Creative thinking.
Problem solving.
160
Six thinking hats / Edward de Bono. - Rev. ed. - London : Penguin, 1999. - 192 s. ; 20 cm.
Previous ed.: Harmondsworth: Viking, 1986.
0140296662 (pbk) :
Creative thinking.
Problem solving.
160