Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Axelrod, Robert M., y Richard Dawkins. The Evolution of Cooperation. London [etc.]: Penguin, 1990.

Cita MLA (9a ed.)

Axelrod, Robert M., y Richard Dawkins. The Evolution of Cooperation. Penguin, 1990.