APA (7th ed.) Citation

Walsh, G. J. (2009). Bedrock geologic map of the Old Lyme quadrangle, New London and Middlesex Counties, Connecticut. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Walsh, Gregory J. Bedrock Geologic Map of the Old Lyme Quadrangle, New London and Middlesex Counties, Connecticut. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2009.

MLA (9th ed.) Citation

Walsh, Gregory J. Bedrock Geologic Map of the Old Lyme Quadrangle, New London and Middlesex Counties, Connecticut. U.S. Dept. of the Interior, U.S. Geological Survey, 2009.