APA (7th ed.) Citation

Gibbons, A. B. (1977). Geologic map of the New Castle quadrangle, Henry County, Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Gibbons, Anthony B. Geologic Map of the New Castle Quadrangle, Henry County, Kentucky. Reston, Va.: U.S. Geological Survey, 1977.

MLA (9th ed.) Citation

Gibbons, Anthony B. Geologic Map of the New Castle Quadrangle, Henry County, Kentucky. U.S. Geological Survey, 1977.