APA (7th ed.) Citation

United States. War Department. (1937). Training Regulations, 440-96: Air Corps: Bomb Ballistics and Bomb Sights, Changes 2. [s.n.].

Chicago Style (17th ed.) Citation

United States. War Department. Training Regulations, 440-96: Air Corps: Bomb Ballistics and Bomb Sights, Changes 2. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. War Department. Training Regulations, 440-96: Air Corps: Bomb Ballistics and Bomb Sights, Changes 2. [s.n.], 1937.