APA Citation

Colorado Geological Survey, Tweto, O. 1., & Schoenfeld, R. E. Geologic map of Colorado. Reston, Va. : 1979: Department of the Interior, U.S. Geological Survey.

Chicago Style Citation

Colorado Geological Survey, Ogden 1912-1983 Tweto, and R. E. Schoenfeld. Geologic Map of Colorado. Reston, Va. : 1979: Department of the Interior, U.S. Geological Survey.

MLA Citation

Colorado Geological Survey, Ogden 1912-1983 Tweto, and R. E. Schoenfeld. Geologic Map of Colorado. Reston, Va. : 1979: Department of the Interior, U.S. Geological Survey.

Warning: These citations may not always be 100% accurate.