Coba jelasin Pautan luar dari Tentera Udara Kedua Puluh dalam bahasa melayu dong

AIR FORCE MAGAZINE, Journal of the Air Force Assoc., August 2008.

US ARMY History: Control of Army Air Operations Overseas in Washington Command Post:The Operations Division. United States Army Center of Military History. CMH Pub 1-2.

US ARMY History: QUADRANT Conference