Geological Survey (U.S.), Scott, G. R., & Cobban, W. A. (1986). Geologic and biostratigraphic map of the Pierre Shale in the Colorado Springs-Pueblo area, Colorado. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Glenn R. Scott, and William A. Cobban. Geologic and Biostratigraphic Map of the Pierre Shale in the Colorado Springs-Pueblo Area, Colorado. Reston, Va.: The Survey, 1986.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Geologic and Biostratigraphic Map of the Pierre Shale in the Colorado Springs-Pueblo Area, Colorado. The Survey, 1986.
Warning: These citations may not always be 100% accurate.