APA (7th ed.) Citation

Barnett, S. A. (1957). The human species: A biology of man. Penguin Books.

Chicago Style (17th ed.) Citation

Barnett, S. A. The Human Species: A Biology of Man. Harmondsworth, Eng.: Penguin Books, 1957.

MLA (8th ed.) Citation

Barnett, S. A. The Human Species: A Biology of Man. Penguin Books, 1957.

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