APA (7th ed.) Citation

Sawyer, W. W. (1991). Mathematician's delight. Penguin.

Chicago Style (17th ed.) Citation

Sawyer, W. W. Mathematician's Delight. London: Penguin, 1991.

MLA (9th ed.) Citation

Sawyer, W. W. Mathematician's Delight. Penguin, 1991.

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