^Pelletier Air Enthusiast September/October 1998, pp. 3–4.
書目
Francillon, René J. McDonnell Douglas Aircraft since 1920. London: Putnam, 1979. ISBN0-370-00050-1.
Pelletier, Alain J. "Northrop's Connection: The unsung A-17 attack aircraft and its legacy, Part 1". Air Enthusiast No 75, May–June 1998, pp. 62–67. Stamford, Lincolnshire: Key Publishing. ISSN0143-5450.
Pelletier, Alain J. "Northrop's Connection: The unsung A-17 attack aircraft and its legacy, Part 2". Air Enthusiast No 77, September–October 1998, pp. 2–15. Stamford, Lincolnshire: Key Publishing. ISSN0143-5450.
Wagner, Ray. American Combat Planes of the 20th Century, Third Enlarged Edition. New York: Doubleday, 1982. ISBN978-0-930083-17-5.
Andrade, John M. . U.S Military Aircraft Designations and Serials since 1909. Leicester: Midland Counties Publications, 1979. ISBN0-904597-22-9.
Swanborough, F. G. and Peter M. Bowers. United States Military aircraft since 1909. London: Putnam, 1963, 1971, 1989. ISBN0-85177-816-X.