APA (7th ed.) Citation

De Bono, E. (1997). Edward de Bono's: Textbook of wisdom. Penguin Books.

Chicago Style (17th ed.) Citation

De Bono, Edward. Edward De Bono's: Textbook of Wisdom. London: Penguin Books, 1997.

MLA (8th ed.) Citation

De Bono, Edward. Edward De Bono's: Textbook of Wisdom. Penguin Books, 1997.