Cita APA (7a ed.)

Simpson, G. G. (1955). The major features of evolution (2nd printing.). Columbia University Press.

Cita Chicago Style (17a ed.)

Simpson, George Gaylord. The Major Features of Evolution. 2nd printing. New York: Columbia University Press, 1955.

Cita MLA (9a ed.)

Simpson, George Gaylord. The Major Features of Evolution. 2nd printing. Columbia University Press, 1955.