APA (7th ed.) Citation

United States. National Bureau of Standards. (1945). Pipes, Ducts, and Fittings for Warm-Air Heating and Air Conditioning. [s.n.].

Chicago Style (17th ed.) Citation

United States. National Bureau of Standards. Pipes, Ducts, and Fittings for Warm-Air Heating and Air Conditioning. [Washington]: [s.n.], 1945.

MLA (9th ed.) Citation

United States. National Bureau of Standards. Pipes, Ducts, and Fittings for Warm-Air Heating and Air Conditioning. [s.n.], 1945.