APA (7th ed.) Citation

Penck, W. (1972). Morphological analysis of land forms : a contribution to physical geology / by W. Penck: A contribution to physical geology. Hafner.

Chicago Style (17th ed.) Citation

Penck, Walther. Morphological Analysis of Land Forms : A Contribution to Physical Geology / by W. Penck: A Contribution to Physical Geology. New York: Hafner, 1972.

MLA (9th ed.) Citation

Penck, Walther. Morphological Analysis of Land Forms : A Contribution to Physical Geology / by W. Penck: A Contribution to Physical Geology. Hafner, 1972.

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