APA način citiranja (7. izdanje)

Cooper, B., & Wallace, C. (2001). Group selection and the evolution of altruism. University of Oxford.

Čikaški stil citiranja (17. izdanje)

Cooper, B., i C. Wallace. Group Selection and the Evolution of Altruism. University of Oxford, 2001.

MLA način citiranja (9. izdanje)

Cooper, B., i C. Wallace. Group Selection and the Evolution of Altruism. University of Oxford, 2001.