APA (7e ed.) Bronvermelding

Williams, G. C. (1992). Natural selection: Domains, levels and challenges. Oxford University.

Chicago (17e ed.) Bronvermelding

Williams, George C. Natural Selection: Domains, Levels and Challenges. Nueva York: Oxford University, 1992.

MLA (9e ed.) Bronvermelding

Williams, George C. Natural Selection: Domains, Levels and Challenges. Oxford University, 1992.