Cita APA (7th ed.)

Walker, P. M. B. (1990). Cambridge dictionary of biology. Cambridge University Press.

Cita Chicago (17th ed.)

Walker, Peter M. B. Cambridge Dictionary of Biology. New York, New York: Cambridge University Press, 1990.

Cita MLA (9th ed.)

Walker, Peter M. B. Cambridge Dictionary of Biology. Cambridge University Press, 1990.