APA (7th ed.) Citation

United States. Army. Signal Corps. (1929). Pigeon service; an agency of signal communication. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Signal Corps. Pigeon Service; an Agency of Signal Communication. [United States]: [publisher not identified], 1929.

MLA (9th ed.) Citation

United States. Army. Signal Corps. Pigeon Service; an Agency of Signal Communication. [publisher not identified], 1929.

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