APA

Simpson G. G., . (1944). Tempo and mode in evolution. New York: Columbia University Press.

Chicago

Simpson George Gaylord, . 1944. Tempo and mode in evolution. New York: Columbia University Press.

Harvard

Simpson G. G., . (1944). Tempo and mode in evolution. New York: Columbia University Press.

MLA

Simpson George Gaylord, . Tempo and mode in evolution. New York: Columbia University Press. 1944.