Geological Survey (U.S.) & United States. Forest Service. (1948). Montana, 7.5 minute series (topographic). U.S. Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and United States. Forest Service. Montana, 7.5 Minute Series (topographic). Reston, Va.: U.S. Geological Survey, 1948.
MLA (9th ed.) CitationGeological Survey (U.S.) and United States. Forest Service. Montana, 7.5 Minute Series (topographic). U.S. Geological Survey, 1948.
Warning: These citations may not always be 100% accurate.