APA (7th ed.) Citation

Geological Survey (U.S.). (1938). Floods of Ohio and Mississippi rivers, January--February 1937. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Floods of Ohio and Mississippi Rivers, January--February 1937. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

Geological Survey (U.S.). Floods of Ohio and Mississippi Rivers, January--February 1937. [s.n.], 1938.