APA (7th ed.) Citation

United States. Army. Signal Corps. (1926). Historical sketch of Signal Corps, 1860-1925. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Signal Corps. Historical Sketch of Signal Corps, 1860-1925. [United States]: [publisher not identified], 1926.

MLA (9th ed.) Citation

United States. Army. Signal Corps. Historical Sketch of Signal Corps, 1860-1925. [publisher not identified], 1926.

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