APA (7th ed.) Citation

Axelrod, R. M. (1990). The evolution of cooperation. Penguin Books.

Chicago Style (17th ed.) Citation

Axelrod, Robert M. The Evolution of Cooperation. London [u.a.]: Penguin Books, 1990.

MLA (9th ed.) Citation

Axelrod, Robert M. The Evolution of Cooperation. Penguin Books, 1990.