United States. Department of the Army. (1981). The US Army Signal School apprenticeship program for the trade of radio operator. Headquarters, Dept. of the Army.
Chicago Style (17th ed.) CitationUnited States. Department of the Army. The US Army Signal School Apprenticeship Program for the Trade of Radio Operator. Washington, DC: Headquarters, Dept. of the Army, 1981.
MLA (9th ed.) CitationUnited States. Department of the Army. The US Army Signal School Apprenticeship Program for the Trade of Radio Operator. Headquarters, Dept. of the Army, 1981.
Warning: These citations may not always be 100% accurate.