APA

Simpson G. G., . (1955). The major features of evolution. New York: Columbia University Press.

Chicago

Simpson George Gaylord, . 1955. The major features of evolution. New York: Columbia University Press.

Harvard

Simpson G. G., . (1955). The major features of evolution. New York: Columbia University Press.

MLA

Simpson George Gaylord, . The major features of evolution. New York: Columbia University Press. 1955.