Andrade, John M. (1979). U.S. Military Aircraft Designations and Serials since 1909. Earl Shilton, Leicester: Midland Counties Publications. ISBN0-904597-22-9.
Gunston, Bill (1979). Jet Bombers from the Messerschmitt M2 262 to the Stealth B-2. Osprey Aerospace. ISBN1-85532-258-7.
