APA (7th ed.) Citation

Engeln, O. D. v. (1942). Geomorphology, systematic and regional. The Macmillan Company.

Chicago Style (17th ed.) Citation

Engeln, O. D. von. Geomorphology, Systematic and Regional. New York: The Macmillan Company, 1942.

MLA (9th ed.) Citation

Engeln, O. D. von. Geomorphology, Systematic and Regional. The Macmillan Company, 1942.