APA (7th ed.) Citation

United States. Bureau of Mines. (1933). Mineral Resources of the United States, 1931: Part 2 - Nonmetals. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Mineral Resources of the United States, 1931: Part 2 - Nonmetals. [Washington]: [s.n.], 1933.

MLA (9th ed.) Citation

United States. Bureau of Mines. Mineral Resources of the United States, 1931: Part 2 - Nonmetals. [s.n.], 1933.

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