APA (7th ed.) Citation

Swadley, W. C. (1977). Geologic map of part of the Bethlehem quadrangle, Trimble and Oldham Counties, Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Swadley, W. C. Geologic Map of Part of the Bethlehem Quadrangle, Trimble and Oldham Counties, Kentucky. Reston, Va.: U.S. Geological Survey, 1977.

MLA (9th ed.) Citation

Swadley, W. C. Geologic Map of Part of the Bethlehem Quadrangle, Trimble and Oldham Counties, Kentucky. U.S. Geological Survey, 1977.