Cross, W., & Larson, E. S. (1935). A brief review of the geology of the San Juan region of southwestern Colorado. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationCross, Whitman, and Esper S. Larson. A Brief Review of the Geology of the San Juan Region of Southwestern Colorado. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1935.
MLA (9th ed.) CitationCross, Whitman, and Esper S. Larson. A Brief Review of the Geology of the San Juan Region of Southwestern Colorado. United States Department of the Interior, Geological Survey, 1935.
Warning: These citations may not always be 100% accurate.