Geological Survey (U.S.), Kellogg, K. S., & Williams, V. S. (2000). Geologic map of the Ennis 30ʹ x 60ʹ quadrangle, Madison and Gallatin counties, Montana, and Park County, Wyoming. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Karl S. Kellogg, and Van S. Williams. Geologic Map of the Ennis 30ʹ X 60ʹ Quadrangle, Madison and Gallatin Counties, Montana, and Park County, Wyoming. [Reston, Va.]: The Survey, 2000.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Geologic Map of the Ennis 30ʹ X 60ʹ Quadrangle, Madison and Gallatin Counties, Montana, and Park County, Wyoming. The Survey, 2000.
Warning: These citations may not always be 100% accurate.