APA (7th ed.) Citation

Outerbridge, W. F. (1978). Geologic map of the Cowcreek quadrangle, Owsley and Breathitt Counties, Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Outerbridge, William F. Geologic Map of the Cowcreek Quadrangle, Owsley and Breathitt Counties, Kentucky. Reston, Va.: U.S. Geological Survey, 1978.

MLA (9th ed.) Citation

Outerbridge, William F. Geologic Map of the Cowcreek Quadrangle, Owsley and Breathitt Counties, Kentucky. U.S. Geological Survey, 1978.