APA Citation

Thornbury, W. D. Principles of Geomorphology / William D. Thornbury (2.). New York : John Wiley & Sons.

Chicago Style Citation

Thornbury, William D. Principles of Geomorphology / William D. Thornbury. 2. New York : John Wiley & Sons.

MLA Citation

Thornbury, William D. Principles of Geomorphology / William D. Thornbury. 2. New York : John Wiley & Sons.

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