Cita APA (7a ed.)

Sherwood, M., & Sutton, C. (1988). The Physical world. Oxford University Press.

Cita Chicago Style (17a ed.)

Sherwood, Martin, y Christine Sutton. The Physical World. New York: Oxford University Press, 1988.

Cita MLA (9a ed.)

Sherwood, Martin, y Christine Sutton. The Physical World. Oxford University Press, 1988.