APA (7th ed.) Citation

Weir, G. W., Greene, R. C., & Simmons, G. C. (1965). Calloway Creek limestone and Ashlock and Drakes formations (Upper Ordovician) in south-central Kentucky. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Weir, Gordon W., Robert C. Greene, and George Clarke Simmons. Calloway Creek Limestone and Ashlock and Drakes Formations (Upper Ordovician) in South-central Kentucky. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1965.

MLA (9th ed.) Citation

Weir, Gordon W., et al. Calloway Creek Limestone and Ashlock and Drakes Formations (Upper Ordovician) in South-central Kentucky. United States Department of the Interior, Geological Survey, 1965.