United States. Bureau of Mines. (1921). Some items of investment, expense, and profit in commercial shale-oil production. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Some Items of Investment, Expense, and Profit in Commercial Shale-oil Production. [Washington]: [publisher not identified], 1921.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Some Items of Investment, Expense, and Profit in Commercial Shale-oil Production. [publisher not identified], 1921.
Warning: These citations may not always be 100% accurate.