Geological Survey (U.S.) & ProQuest (Firm). (1909). Department of the Interior. United States Geological Survey. George Otis Smith, Director. Bulletin 371. Reconnaissance of the Book Cliffs coal field between Grand River, Colorado and Sunnyside, Utah. [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 371. Reconnaissance of the Book Cliffs Coal Field Between Grand River, Colorado and Sunnyside, Utah. 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 371. Reconnaissance of the Book Cliffs Coal Field Between Grand River, Colorado and Sunnyside, Utah. [publisher not identified], 1909.