APA (7th ed.) Citation

Walsh, G. J., Aleinikoff, J. N., & Dorais, M. J. (2011). Bedrock geologic map of the Grafton quadrangle, Worcester County, Massachusetts. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Walsh, Gregory J., John Nicholas Aleinikoff, and Michael J. Dorais. Bedrock Geologic Map of the Grafton Quadrangle, Worcester County, Massachusetts. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2011.

MLA (9th ed.) Citation

Walsh, Gregory J., et al. Bedrock Geologic Map of the Grafton Quadrangle, Worcester County, Massachusetts. U.S. Dept. of the Interior, U.S. Geological Survey, 2011.