APA (7th ed.) Citation

Thornbury, W. D. (1965). Regional geomorphology of the United States. Wiley.

Chicago Style (17th ed.) Citation

Thornbury, William D. Regional Geomorphology of the United States. New York: Wiley, 1965.

MLA (8th ed.) Citation

Thornbury, William D. Regional Geomorphology of the United States. Wiley, 1965.

Warning: These citations may not always be 100% accurate.