Cita APA (7th ed.)

STANSFIELD, W. D. (1977). The Science of evolution. Macmillan.

Cita Chicago (17th ed.)

STANSFIELD, William D. The Science of Evolution. New York: Macmillan, 1977.

Cita MLA (9th ed.)

STANSFIELD, William D. The Science of Evolution. Macmillan, 1977.

Atenció: Aquestes cites poden no estar 100% correctes.