De Bono, Edward. Teaching thinking / Edward de Bono. - Harmondsworth : Penguin, 1978. - 268 p. : ill. ; 18 cm. + pbk. - Pelican books . Includes index. ISBN: 0140221638 (pbk) Subjects--Topical Terms: Logic--Study and teaching.Thought and thinking--Study and teaching. Dewey Class. No.: 153