Geological Survey (U.S.) & ProQuest (Firm). (1910). [Water-supply paper 240; Geology and water resources of San Luis Valley, Colorado]. [publisher not identified].
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). [Water-supply Paper 240; Geology and Water Resources of San Luis Valley, Colorado]. Washington: [publisher not identified], 1910.
MLA (9th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). [Water-supply Paper 240; Geology and Water Resources of San Luis Valley, Colorado]. [publisher not identified], 1910.
Warning: These citations may not always be 100% accurate.