APA (7th ed.) Citation

(1941). Surface water supply of the United States, 1939. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Surface Water Supply of the United States, 1939. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1941.

MLA (9th ed.) Citation

Surface Water Supply of the United States, 1939. United States Department of the Interior, Geological Survey, 1941.