APA Citation

De Bono, E. (1990). PO: Beyond yes and no. London: Penguin Books.

Chicago Style Citation

De Bono, Edward. PO: Beyond Yes and No. London: Penguin Books, 1990.

MLA Citation

De Bono, Edward. PO: Beyond Yes and No. London: Penguin Books, 1990.

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