Cite
MLA (8th Edition)
Map Showing Altitude of the Top of the "dakota Sandstone," Montana. U.S. Department of the Interior, Geological Survey, Open-File Services Section, Western Distribution Branch, USGS, 1982.
APA (7th Edition)
Map showing altitude of the top of the "Dakota Sandstone," Montana. (1982). U.S. Department of the Interior, Geological Survey, Open-File Services Section, Western Distribution Branch, USGS.
Chicago (17th Edition)
“Map Showing Altitude of the Top of the ‘Dakota Sandstone," Montana.” Washington, D.C.: U.S. Department of the Interior, Geological Survey, Open-File Services Section, Western Distribution Branch, USGS, 1982.