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Ballad, Jack S. Development and Employment of Fixed-Wing Gunships, 1962–1972. Washington, DC: Office of Air Force History, United States Air Force, 1982.

Davis, Larry. Gunships: A Pictorial History of Spooky. TX: Squadron/Signal Publications, Inc, 1982. ISBN 0-89747-123-7

Gervasi, Tom. Arsenal of Democracy III: America's War Machine, the Pursuit of Global Dominance. New York, NY: Grove Press, Inc, 1984. ISBN 0-394-54102-2.

Gunston, Bill. The Illustrated Encyclopedia of Aircraft Armament. New York, NY: Orion Books, 1988. ISBN 0-517-56607-9.

Jane's Weapon Systems, 1986–1987. Ronald T Pretty, Ed. London, UK: Jane's Publishing Company, Ltd, 1986. ISBN 0-7106-0832-2

United States. Headquarters, Department of the Army. FM 1–40 Attack Helicopter Gunnery. Washington, DC: Headquarters, Department of the Army, 1969.