APA (7th ed.) Citation

Marshall, C. H. (1959). Photogeologic map of the Norwood-1 quadrangle, Montrose and Ouray Counties, Colorado. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Marshall, C. H. Photogeologic Map of the Norwood-1 Quadrangle, Montrose and Ouray Counties, Colorado. Washington, D.C.: U.S. Geological Survey, 1959.

MLA (9th ed.) Citation

Marshall, C. H. Photogeologic Map of the Norwood-1 Quadrangle, Montrose and Ouray Counties, Colorado. U.S. Geological Survey, 1959.