APA (7th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, Cuppels, N. P., & Outerbridge, W. F. (1974). Geologic map of the Millersburg quadrangle, East-Central Kentucky. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, Norman P. Cuppels, and William F. Outerbridge. Geologic Map of the Millersburg Quadrangle, East-Central Kentucky. Reston, Va.: The Survey, 1974.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Millersburg Quadrangle, East-Central Kentucky. The Survey, 1974.