APA Edition Citation

Thornbury ,William D. (2006). Principles of geomorphology (2nd.). New Age.

Chicago Edition Citation

Thornbury ,William D. Principles of Geomorphology. 2nd. New Delhi: New Age, 2006.

MLA Edition Citation

Thornbury ,William D. Principles of Geomorphology. 2nd. New Age, 2006.

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