Geological Survey (U.S.), Geological Survey of Canada, U.S. Lake Survey, Marshall, R. B., & Cooke, C. E. (1913). Topographic map of the Niagara Gorge. U.S. Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Geological Survey of Canada, U.S. Lake Survey, R. B. Marshall, and Chas. E. Cooke. Topographic Map of the Niagara Gorge. [Washington, D.C.]: U.S. Geological Survey, 1913.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Topographic Map of the Niagara Gorge. U.S. Geological Survey, 1913.
Warning: These citations may not always be 100% accurate.