APA (7th ed.) Citation

United States. Army. Air Corps. (1921). Service instructions for balloon liaison officers in course of attack. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Army. Air Corps. Service Instructions for Balloon Liaison Officers in Course of Attack. Washington: U.S. GPO, 1921.

MLA (9th ed.) Citation

United States. Army. Air Corps. Service Instructions for Balloon Liaison Officers in Course of Attack. U.S. GPO, 1921.

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