APA (7th ed.) Citation

Geological Survey (U.S.). (1937). Geology of the Marathon region, Texas. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Geology of the Marathon Region, Texas. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

Geological Survey (U.S.). Geology of the Marathon Region, Texas. [s.n.], 1937.