APA (7th ed.) Citation

Kepferle, R. C., & Sable, E. G. (1977). Geologic map of the Fort Knox quadrangle, north-central Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Kepferle, Roy Clark, and Edward G. Sable. Geologic Map of the Fort Knox Quadrangle, North-central Kentucky. Reston, Va.: U.S. Geological Survey, 1977.

MLA (9th ed.) Citation

Kepferle, Roy Clark, and Edward G. Sable. Geologic Map of the Fort Knox Quadrangle, North-central Kentucky. U.S. Geological Survey, 1977.

Warning: These citations may not always be 100% accurate.