APA (7th ed.) Citation

United States. Bureau of Mines. (1936). The improved permissible flame safety lamps. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. The Improved Permissible Flame Safety Lamps. [Washington]: [s.n.], 1936.

MLA (9th ed.) Citation

United States. Bureau of Mines. The Improved Permissible Flame Safety Lamps. [s.n.], 1936.

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