Cooper, B., & Wallace, C. (2001). Group selection and the evolution of altruism. University of Oxford.
Cita Chicago (17th ed.)Cooper, B., i C. Wallace. Group Selection and the Evolution of Altruism. University of Oxford, 2001.
Cita MLA (9th ed.)Cooper, B., i C. Wallace. Group Selection and the Evolution of Altruism. University of Oxford, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.