APA (7th ed.) Citation

Hobbs, W. H. (1931). Earth features and their meaning (2d ed., rev. and enl.). The Macmillan Company.

Chicago Style (17th ed.) Citation

Hobbs, William Herbert. Earth Features and Their Meaning. 2d ed., rev. and enl. New York: The Macmillan Company, 1931.

MLA (9th ed.) Citation

Hobbs, William Herbert. Earth Features and Their Meaning. 2d ed., rev. and enl. The Macmillan Company, 1931.