Cita APA (7th ed.)

Bridges, E. M. (1990). World geomorphology. Cambridge University Press.

Cita Chicago (17th ed.)

Bridges, E. M. World Geomorphology. Cambridge ; New York: Cambridge University Press, 1990.

Cita MLA (9th ed.)

Bridges, E. M. World Geomorphology. Cambridge University Press, 1990.