APA (7th ed.) Citation

United States. National Bureau of Standards. (1944). Bronze Pop Safety Valves, and Bronze, Iron, and Steel Relief Valves. [s.n.].

Chicago Style (17th ed.) Citation

United States. National Bureau of Standards. Bronze Pop Safety Valves, and Bronze, Iron, and Steel Relief Valves. [Washington]: [s.n.], 1944.

MLA (9th ed.) Citation

United States. National Bureau of Standards. Bronze Pop Safety Valves, and Bronze, Iron, and Steel Relief Valves. [s.n.], 1944.