APA (7th ed.) Citation

Sawyer, W. W. (1964). Introducing mathematics. Penguin Books.

Chicago Style (17th ed.) Citation

Sawyer, Walter W. Introducing Mathematics. Harmondsworth: Penguin Books, 1964.

MLA (9th ed.) Citation

Sawyer, Walter W. Introducing Mathematics. Penguin Books, 1964.

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