APA (7th ed.) Citation

United States. Army. Air Corps. (1918). Zenith carburetors, 55 D.C. type. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Zenith Carburetors, 55 D.C. Type. [Place of publication not identified]: [publisher not identified], 1918.

MLA (9th ed.) Citation

United States. Army. Air Corps. Zenith Carburetors, 55 D.C. Type. [publisher not identified], 1918.

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