United States. Bureau of Mines & ProQuest (Firm). (1929). Mineral Resources of the United States 1926. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines and ProQuest (Firm). Mineral Resources of the United States 1926. Washington: [publisher not identified], 1929.
MLA (9th ed.) CitationUnited States. Bureau of Mines and ProQuest (Firm). Mineral Resources of the United States 1926. [publisher not identified], 1929.
Warning: These citations may not always be 100% accurate.