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.
Atenció: Aquestes cites poden no estar 100% correctes.