APA (7th ed.) Citation

United States. Army. Signal Corps. (1930). Field exercise, 1929-30. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Signal Corps. Field Exercise, 1929-30. [United States]: [publisher not identified], 1930.

MLA (9th ed.) Citation

United States. Army. Signal Corps. Field Exercise, 1929-30. [publisher not identified], 1930.

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