APA (7th ed.) Citation

Spears, D., & Richards, M. (1972). Race, culture and intelligence. Penguin Books.

Chicago Style (17th ed.) Citation

Spears, David, and Martin Richards. Race, Culture and Intelligence. Harmondsworth: Penguin Books, 1972.

MLA (9th ed.) Citation

Spears, David, and Martin Richards. Race, Culture and Intelligence. Penguin Books, 1972.