Tolong jelaskan mengenai Varian dari F-4 Phantom II

F-4A, B, J, N and S

F-110 Spectre, F-4C, D and E

QF-4B, E, G, N and S

Hobson, Chris. Vietnam Air Losses, USAF, USN, USMC, Fixed-Wing Aircraft Losses in Southeast Asia 1961–1973. North Branch, Minnesota: Specialty Press, 2001. ISBN 1-85780-115-6.

Jones, Lloyd S. U.S. Fighters: 1925-1980s. Fallbrook, California: Aero Publishers, Inc., 1975. ISBN 0-8168-9200-8.

Knaack, Marcelle Size. Encyclopedia of US Air Force Aircraft and Missile Systems: Volume 1 Post-World War II Fighters 1945-1973. Washington, DC: Office of Air Force History, 1978. ISBN 0-912799-59-5.

Loftin, L.K. Jr. Quest for Performance: The Evolution of Modern Aircraft: NASA SP-468.   Access date: 22 April 2006.

Swanborough, Gordon and Bowers, Peter. United States Military Aircraft Since 1909. Washington, DC: Smithsonian, 1989. ISBN 0-87474-880-1.

Taylor, Michael J.H. Jane’s American Fighting Aircraft of the 20th Century. New York: Mallard Press, 1991. ISBN 0-7924-5627-0.

Wagner, Ray. American Combat Planes, Third Enlarged Edition. New York: Doubleday, 1982. ISBN 0-385-13120-8.