Dorr, Robert F. and David Donald. Fighters of the United States Air Force. London: Temple Press/Aerospace, 1990. ISBN 0-600-55094-X
Francillon, René J. Lockheed Aircraft since 1913. London: Putnam, 1982. ISBN 0-370-30329-6.
Green, William and Gordon Swanborough. "The end of the beginning... The Seversky P-35". Air Enthusiast Ten, July–September 1979, các trang 8–21.
Pelletier, Alain J. "Singular Two-Seater: Consolidated's PB-2A - The USAAC's Only Two-Seat Fighter". Air Enthusiast No. 85, January/February 2000, các trang 2–11. ISSN 0143-5450.
Swanborough, Gordon and Peter M. Bowers. United States Military Aircraft Since 1909. Washington, D.C.: Smithsonian, 1989. ISBN 0-87474-880-1.
Wegg, John. General Dynamics Aircraft and their Predecessors. London: Putnam, 1990. ISBN 0-85177-833-X.