Sources:
https://www.thedailybeast.com/the-mys...
http://markcallagher.com/history/ww2r...
http://dunkirk1940.org/index.php?&p=1...
https://hushkit.net/2018/04/17/spitfi...
Great Battles of World War II by Dr. Chris Mann
https://www.telegraph.co.uk/comment/5...
https://www.wearethemighty.com/articl...
https://defenceindepth.co/2016/07/11/...
https://skeptoid.com/blog/2013/04/15/...
The Private War Journal of Generaloberst Franz Halder - Volume IV (link)
HyperWar: The War in France and Flanders by Major L.F Ellis (link)
Report of Comparative Trials of Hurricane Versus Messerschmitt 109 (link)
Strategy For Defeat - The Luftwaffe 1933-1945 by Williamson Murry (link)