APA (7th ed.) Citation

De Bono. (1991). Opportunities: A handbook of business opportunity search. Penguin.

Chicago Style (17th ed.) Citation

De Bono. Opportunities: A Handbook of Business Opportunity Search. Harmondsworth: Penguin, 1991.

MLA (9th ed.) Citation

De Bono. Opportunities: A Handbook of Business Opportunity Search. Penguin, 1991.

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