APA (7th ed.) Citation

United States. Department of the Army & United States. Army. Air Corps. (1940). Air navigation. G.P.O..

Chicago Style (17th ed.) Citation

United States. Department of the Army and United States. Army. Air Corps. Air Navigation. Washington: G.P.O., 1940.

MLA (9th ed.) Citation

United States. Department of the Army and United States. Army. Air Corps. Air Navigation. G.P.O., 1940.

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