APA (7th ed.) Citation

United States. War Department. (1921). Allowances of bombs for Air Service training. GPO.

Chicago Style (17th ed.) Citation

United States. War Department. Allowances of Bombs for Air Service Training. [Washington]: GPO, 1921.

MLA (9th ed.) Citation

United States. War Department. Allowances of Bombs for Air Service Training. GPO, 1921.

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