APA (7th ed.) Citation

United States. Bureau of Mines. (1931). Smelting in lead blast furnace; handling rich charges: IX. Conditions at tuyere zone. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Smelting in Lead Blast Furnace; Handling Rich Charges: IX. Conditions at Tuyere Zone. [Washington]: [publisher not identified], 1931.

MLA (9th ed.) Citation

United States. Bureau of Mines. Smelting in Lead Blast Furnace; Handling Rich Charges: IX. Conditions at Tuyere Zone. [publisher not identified], 1931.