De Bono, E. (1990). Lateral thinking for management: A handbook. London: Penguin.
Chicago Style aipamenaDe Bono, Edward. Lateral Thinking for Management: A Handbook. London: Penguin, 1990.
MLA aipamenaDe Bono, Edward. Lateral Thinking for Management: A Handbook. London: Penguin, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.