APA (7th ed.) Citation

Geological Survey (U.S.). (1937). Coal deposits of Pike County, Kentucky. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Coal Deposits of Pike County, Kentucky. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

Geological Survey (U.S.). Coal Deposits of Pike County, Kentucky. [s.n.], 1937.

Warning: These citations may not always be 100% accurate.