APA (7th ed.) Citation

Thornbury, W. D. Principles of geomorphology. John Wiley and Sons.

Chicago Style (17th ed.) Citation

Thornbury, William D. Principles of Geomorphology. John Wiley and Sons.

MLA (8th ed.) Citation

Thornbury, William D. Principles of Geomorphology. John Wiley and Sons.

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