United States. Department of the Interior, ProQuest (Firm), & United States. Bureau of Mines. (1919). Report of the Director of the Bureau of Mines. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of the Interior, ProQuest (Firm), and United States. Bureau of Mines. Report of the Director of the Bureau of Mines. Washington: [publisher not identified], 1919.
MLA (9th ed.) CitationUnited States. Department of the Interior, et al. Report of the Director of the Bureau of Mines. [publisher not identified], 1919.
Warning: These citations may not always be 100% accurate.