APA (7th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, Klemic, H., Ulrich, G. E., & Moore, S. L. (1968). Geologic map of part of the Johnson Hollow quadrangle, Trigg County, Kentucky. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, Harry Klemic, George E. Ulrich, and Samuel L. Moore. Geologic Map of Part of the Johnson Hollow Quadrangle, Trigg County, Kentucky. Reston, Va.: The Survey, 1968.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of Part of the Johnson Hollow Quadrangle, Trigg County, Kentucky. The Survey, 1968.