APA (7th ed.) Citation

Wallace, R. M. (1976). Geologic map of the Leesburg quadrangle, north-central Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Wallace, Roberts Manning. Geologic Map of the Leesburg Quadrangle, North-central Kentucky. Reston, Va.: U.S. Geological Survey, 1976.

MLA (9th ed.) Citation

Wallace, Roberts Manning. Geologic Map of the Leesburg Quadrangle, North-central Kentucky. U.S. Geological Survey, 1976.