Geological Survey (U.S.), United States. Environmental Protection Agency, Brown, T. A., Dunning, C. P., & Sharpe, J. B. (2000). Altitude, depth, and thickness of the Galena-Platteville bedrock unit in the subcrop area of Illinois and Wisconsin. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), United States. Environmental Protection Agency, Timothy A. Brown, C. P. Dunning, and Jennifer B. Sharpe. Altitude, Depth, and Thickness of the Galena-Platteville Bedrock Unit in the Subcrop Area of Illinois and Wisconsin. [Reston, Va.]: The Survey, 2000.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Altitude, Depth, and Thickness of the Galena-Platteville Bedrock Unit in the Subcrop Area of Illinois and Wisconsin. The Survey, 2000.
Warning: These citations may not always be 100% accurate.