Geological Survey (U.S.) & ProQuest (Firm). (1909). Department of the Interior. United States Geological Survey. George Otis Smith, Director. Bulletin 390. Geology of the Lewistown coal field, Montana. [publisher not identified].
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Department of the Interior. United States Geological Survey. George Otis Smith, Director. Bulletin 390. Geology of the Lewistown Coal Field, Montana. Washington: [publisher not identified], 1909.
MLA (9th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Department of the Interior. United States Geological Survey. George Otis Smith, Director. Bulletin 390. Geology of the Lewistown Coal Field, Montana. [publisher not identified], 1909.
Warning: These citations may not always be 100% accurate.