APA (7th ed.) Citation

United States. Bureau of Mines. (1924). Tests of lignite char as reduction fuel in smelting of zinc ores. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Tests of Lignite Char as Reduction Fuel in Smelting of Zinc Ores. [Washington]: [publisher not identified], 1924.

MLA (9th ed.) Citation

United States. Bureau of Mines. Tests of Lignite Char as Reduction Fuel in Smelting of Zinc Ores. [publisher not identified], 1924.

Warning: These citations may not always be 100% accurate.