APA (7th ed.) Citation

DE BONO. (1990). Wordpower: An illustrated dictionary of vital words. Penguin Books.

Chicago Style (17th ed.) Citation

DE BONO. Wordpower: An Illustrated Dictionary of Vital Words. London: Penguin Books, 1990.

MLA (9th ed.) Citation

DE BONO. Wordpower: An Illustrated Dictionary of Vital Words. Penguin Books, 1990.

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