Dyfyniad APA

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

Dyfyniad Arddull Chicago

Williams, George C. Natural Selection: Domains, Levels, and Challenges. New York: Oxford university press, 1992.

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.