^ abPattillo, Donald M. (2001). Pushing the Envelope: The American Aircraft Industry. Ann Arbor, MI: University of Michigan Press. p. 131. ISBN978-0472086719
^ abGunston, Bill (1994). World Encyclopaedia of Aircraft Manufacturers. Annapolis, MD: Naval Institute Press. p. 118. ISBN978-1557509390
^Pitkin, Walter (1942). What's That Plane?: The Handbook for Practical Aircraft Identification (2nd ed.). New York: Penguin Books. p. 60. ASINB001DEMTMO
^ abHistorical Office of the Army Air Forces (1947). The official pictorial history of the AAF. New York: Duell, Sloan and Pierce. p. 177. ASINB000GU84Z2
^Andrade, John (1979). U.S. Military Aircraft Designations and Serials since 1909. Leicester, UK: Midland Counties Publications. p. 61. ISBN0-904597-22-9
^Trimble, William F. (1982). High Frontier: A History of Aeronautics in Pennsylvania. Pittsburgh, PA: University of Pittsburgh Press. pp. 217–218. ISBN0-8229-5340-4
参考文献
The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing