APA (7th ed.) Citation

United States. Bureau of Mines. (1936). Questions and answers on boiler feed-­water conditioning. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Questions and Answers on Boiler Feed-­water Conditioning. [Washington]: [s.n.], 1936.

MLA (9th ed.) Citation

United States. Bureau of Mines. Questions and Answers on Boiler Feed-­water Conditioning. [s.n.], 1936.