Cita APA (7th ed.)

Selby, M. (1985). Earth's changing surface: An introduction to geomorphology. Oxford University Press.

Cita Chicago (17th ed.)

Selby, M.J. Earth's Changing Surface: An Introduction to Geomorphology. New York: Oxford University Press, 1985.

Cita MLA (9th ed.)

Selby, M.J. Earth's Changing Surface: An Introduction to Geomorphology. Oxford University Press, 1985.