APA (7th ed.) Citation

United States. War Department. (1931). Air Corps: Identification of aircraft, changes numbers 1. GPO.

Chicago Style (17th ed.) Citation

United States. War Department. Air Corps: Identification of Aircraft, Changes Numbers 1. [Washington]: GPO, 1931.

MLA (9th ed.) Citation

United States. War Department. Air Corps: Identification of Aircraft, Changes Numbers 1. GPO, 1931.

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