APA (7th ed.) Citation

Simpson, H. E. (1990). Bedrock geology of the Bristol Quadrangle, Hartford, Litchfield, and New Haven counties, Connecticut (Rev. 1990.). U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Simpson, Howard E. Bedrock Geology of the Bristol Quadrangle, Hartford, Litchfield, and New Haven Counties, Connecticut. Rev. 1990. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1990.

MLA (9th ed.) Citation

Simpson, Howard E. Bedrock Geology of the Bristol Quadrangle, Hartford, Litchfield, and New Haven Counties, Connecticut. Rev. 1990. U.S. Dept. of the Interior, U.S. Geological Survey, 1990.