APA (7th ed.) Citation

Tweto, O. (1987). Rock units of the Precambrian basement in Colorado. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Tweto, Ogden. Rock Units of the Precambrian Basement in Colorado. Washington: Department of the Interior, U.S. Geological Survey, 1987.

MLA (9th ed.) Citation

Tweto, Ogden. Rock Units of the Precambrian Basement in Colorado. Department of the Interior, U.S. Geological Survey, 1987.

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