APA (7th ed.) Citation

Geological Survey (U.S.). (1940). Clay investigations in the Southern States, 1934-35. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Clay Investigations in the Southern States, 1934-35. [Washington]: [s.n.], 1940.

MLA (9th ed.) Citation

Geological Survey (U.S.). Clay Investigations in the Southern States, 1934-35. [s.n.], 1940.