Cita APA (7th ed.)

Pethick, J. (1984). an Introduction to coastal Geomorphology. Arnold.

Cita Chicago (17th ed.)

Pethick, John. An Introduction to Coastal Geomorphology. London: Arnold, 1984.

Cita MLA (9th ed.)

Pethick, John. An Introduction to Coastal Geomorphology. Arnold, 1984.