APA (7th ed.) Citation

De Bono, E. (1987). Letters to thinking: Further thoughts on lateral thinking. Penguin.

Chicago Style (17th ed.) Citation

De Bono, Edward. Letters to Thinking: Further Thoughts on Lateral Thinking. London: Penguin, 1987.

MLA (8th ed.) Citation

De Bono, Edward. Letters to Thinking: Further Thoughts on Lateral Thinking. Penguin, 1987.

Warning: These citations may not always be 100% accurate.