APA (7th ed.) Citation

Barnett, S. A. (1950). The human species: A biology of man. Norton.

Chicago Style (17th ed.) Citation

Barnett, Samuel A. The Human Species: A Biology of Man. New York: Norton, 1950.

MLA (9th ed.) Citation

Barnett, Samuel A. The Human Species: A Biology of Man. Norton, 1950.