APA (7th ed.) Citation

United States. War Department. (1929). Air Corps: Bomb shackles, types B-4, B-4A, B-5, and B-5A. GPO.

Chicago Style (17th ed.) Citation

United States. War Department. Air Corps: Bomb Shackles, Types B-4, B-4A, B-5, and B-5A. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

United States. War Department. Air Corps: Bomb Shackles, Types B-4, B-4A, B-5, and B-5A. GPO, 1929.