APA (7th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, & Englund, K. J. (1961). Geology of the Ewing quadrangle, Kentucky and Virginia. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, and Kenneth John Englund. Geology of the Ewing Quadrangle, Kentucky and Virginia. Washington, D.C.: U.S. Geological Survey, 1961.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geology of the Ewing Quadrangle, Kentucky and Virginia. U.S. Geological Survey, 1961.