United States. Department of Commerce. (1924). Fifteenth annual report of Director of Bureau of Mines to Secretary of Interior for fiscal year ended June 30, 1925. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Commerce. Fifteenth Annual Report of Director of Bureau of Mines to Secretary of Interior for Fiscal Year Ended June 30, 1925. [Washington]: GPO, 1924.
MLA (9th ed.) CitationUnited States. Department of Commerce. Fifteenth Annual Report of Director of Bureau of Mines to Secretary of Interior for Fiscal Year Ended June 30, 1925. GPO, 1924.
Warning: These citations may not always be 100% accurate.