United States. Army. Air Corps. (1921). Appointment and reduction of noncommissioned officers and rating and disrating of enlisted specialists, Air Service. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Army. Air Corps. Appointment and Reduction of Noncommissioned Officers and Rating and Disrating of Enlisted Specialists, Air Service. Washington: [publisher not identified], 1921.
MLA (9th ed.) CitationUnited States. Army. Air Corps. Appointment and Reduction of Noncommissioned Officers and Rating and Disrating of Enlisted Specialists, Air Service. [publisher not identified], 1921.
Warning: These citations may not always be 100% accurate.