APA (7th ed.) Citation

De Bono, E. (1990). Worpower: An illustrated dictionary of vital words. Penguin Books.

Chicago Style (17th ed.) Citation

De Bono, Edward. Worpower: An Illustrated Dictionary of Vital Words. London: Penguin Books, 1990.

MLA (9th ed.) Citation

De Bono, Edward. Worpower: An Illustrated Dictionary of Vital Words. Penguin Books, 1990.