APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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