APA (7th ed.) Citation

Alvord, D. C. (1965). Geologic map of the Broad Bottom quadrangle, eastern Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Alvord, Donald C. Geologic Map of the Broad Bottom Quadrangle, Eastern Kentucky. Washington, D.C.: U.S. Geological Survey, 1965.

MLA (9th ed.) Citation

Alvord, Donald C. Geologic Map of the Broad Bottom Quadrangle, Eastern Kentucky. U.S. Geological Survey, 1965.

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