APA Citation

Thornbury, W. D. (1969). Principles of geomorphology (2. ed.). New York: J. Wiley & Sons.

Chicago Style Citation

Thornbury, William D. Principles of Geomorphology. 2. ed. New York: J. Wiley & Sons, 1969.

MLA Citation

Thornbury, William D. Principles of Geomorphology. 2. ed. New York: J. Wiley & Sons, 1969.

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