Geological Survey (U.S.), Massachusetts. Department of Public Works, & Hadley, J. B. (1949). Geologic map of the Mount Grace quadrangle, Massachusetts: Surficial geology. U.S. Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Massachusetts. Department of Public Works, and Jarvis B. Hadley. Geologic Map of the Mount Grace Quadrangle, Massachusetts: Surficial Geology. Reston, Va.: U.S. Geological Survey, 1949.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Geologic Map of the Mount Grace Quadrangle, Massachusetts: Surficial Geology. U.S. Geological Survey, 1949.
Warning: These citations may not always be 100% accurate.