APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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