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Trueman, C. N. (2015, April 17). Aircraft and World War One. Retrieved May 18, 2018, from https://www.historylearningsite.co.uk/world-war-one/aerial-warfare-and-world-war-one/aircraft-and-world-war-one/
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Trueman, C. N. (2015, April 17). Aircraft and World War One. Retrieved May 18, 2018, from https://www.historylearningsite.co.uk/world-war-one/aerial-warfare-and-world-war-one/aircraft-and-world-war-one/
http://centenaire.org/en/autour-de-la-grande-guerre/aviation/history-us-air-service-world-war-i
http://ethw.org/World_War_II_Aircraft
http://www.century-of-flight.net/Aviation%20history/WW2/splash.htm
https://www.nae.edu/TheEvolutionofMilitaryAviation.aspx
s://airandspace.si.edu/exhibitions/world-war-ii-aviation-uh
http://www.century-of-flight.net/Aviation%20history/jet%20age/cold%20war.htm
https://airandspace.si.edu/exhibitions/cold-war-aviation
https://www.nae.edu/TheEvolutionofMilitaryAviation.aspx
http://www.historyofwar.org/articles/wars_airwar.html
http://www.crecy.co.uk/soviet-strategic-aviation-in-the-cold-war