APA (7th ed.) Citation

Geological Survey (U.S.). (1941). Surface water supply of the United States, 1940: Part 4, St. Lawrence River basin. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Surface Water Supply of the United States, 1940: Part 4, St. Lawrence River Basin. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

Geological Survey (U.S.). Surface Water Supply of the United States, 1940: Part 4, St. Lawrence River Basin. [s.n.], 1941.