De Bono, E. (1970). Lateral thinking: Creativity step by step ([1st U.S. ed.].). Harper & Row.
Chicago Style aipamenaDe Bono, Edward. Lateral Thinking: Creativity Step by Step. [1st U.S. ed.]. New York: Harper & Row, 1970.
MLA aipamenaDe Bono, Edward. Lateral Thinking: Creativity Step by Step. [1st U.S. ed.]. Harper & Row, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.