Here's why, also according to Adolf Galland, the Spitfire Mk.XIV (and not the P-51D) was the best piston-engined fighter of WWII in Europe - The Aviation Geek Club
Spitfire 80 at 80 | BAE Systems
What is the best variant of Spitfire? - Quora
Supermarine Spitfire Mk.IX - The American Heritage Museum
Supermarine Spitfire - Specifications - Technical Data / Description
Spitfire: 14 Facts and Figures You Probably Didn't Know About the Supermarine Spitfire - The Iconic Plane That Fought During the Battle of Britain - Anglotopia.net
The Spitfires that nearly broke the sound barrier - BBC Future
Spitfire | British WW2 Fighter Aircraft | Britannica
The Spitfires that nearly broke the sound barrier - BBC Future
Supermarine Spitfire Mk XVI | Air Force
Spitfire | Aircraft
The Story of the High Speed Spitfire | Classic Warbirds
Spitfire History - Development of the Spitfire
Flying the Supermarine Spitfire | Aviation | Utah Valley University
Supermarine Spitfire · The Encyclopedia of Aircraft David C. Eyre