APA (7th ed.) Citation

Simpson, G. G. (1965). The geography of evolution ([1st ed.].). Chilton Books.

Chicago Style (17th ed.) Citation

Simpson, George Gaylord. The Geography of Evolution. [1st ed.]. Philadelphia: Chilton Books, 1965.

MLA (9th ed.) Citation

Simpson, George Gaylord. The Geography of Evolution. [1st ed.]. Chilton Books, 1965.