APA (7th ed.) Citation

Spengler, R. W. (1977). Geologic map of the Salyersville south quadrangle, Magoffin and Breathitt counties, Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Spengler, Richard W. Geologic Map of the Salyersville South Quadrangle, Magoffin and Breathitt Counties, Kentucky. Reston, Va.: U.S. Geological Survey, 1977.

MLA (9th ed.) Citation

Spengler, Richard W. Geologic Map of the Salyersville South Quadrangle, Magoffin and Breathitt Counties, Kentucky. U.S. Geological Survey, 1977.

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