APA (7th ed.) Citation

(1972). Map showing types of bedrock and surficial deposits in the Aspen quadrangle, Pitkin county, Colorado. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Map Showing Types of Bedrock and Surficial Deposits in the Aspen Quadrangle, Pitkin County, Colorado. Washington, D.C: U.S. Geological Survey, 1972.

MLA (9th ed.) Citation

Map Showing Types of Bedrock and Surficial Deposits in the Aspen Quadrangle, Pitkin County, Colorado. U.S. Geological Survey, 1972.

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