APA (7th ed.) Citation

United States. Army. Signal Corps. (1931). Signal Corps training films. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Signal Corps. Signal Corps Training Films. Washington: [publisher not identified], 1931.

MLA (9th ed.) Citation

United States. Army. Signal Corps. Signal Corps Training Films. [publisher not identified], 1931.

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