APA (7th ed.) Citation

United States. War Department. (1927). Air Corps: Aircraft engines. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. War Department. Air Corps: Aircraft Engines. [Washington]: [publisher not identified], 1927.

MLA (9th ed.) Citation

United States. War Department. Air Corps: Aircraft Engines. [publisher not identified], 1927.

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