APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Thornbury, W. D. Regional Geomorphology of the United States / by W.D. Thornbury. Wiley, 1965.

MLA (9th ed.) Citation

Thornbury, W. D. Regional Geomorphology of the United States / by W.D. Thornbury. Wiley, 1965.

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