Darling, David. "Lippisch Ente"Archived 14 March 2008 at the Wayback Machine, The Internet Encyclopedia of Science – Experimental Aircraft. Accessed 5 October 2008.
The Gloster S.S.8, Flight, 6 December 1929, Page 1273: "the type of single-seater fighter known as an "Interceptor" is a class of aircraft designed, as the title suggests, for intercepting hostile aircraft."
Trimble, Stephen (May 2010), "Boeing plots return to next-generation fighter market", The Dewline, Flight Global, archived from the original on 10 May 2010, retrieved 6 August 2011.
"Mitchell's Theory". Air & Space Power Course. College of Aerospace Doctrine, Research and Education. 22 September 2011. Archived from the original on 20 January 2012. Retrieved 25 September 2011.
"Mitchell's Theory". Air & Space Power Course. College of Aerospace Doctrine, Research and Education. 22 September 2011. Archived from the original on 20 January 2012. Retrieved 25 September 2011.
Darling, David. "Lippisch Ente"Archived 14 March 2008 at the Wayback Machine, The Internet Encyclopedia of Science – Experimental Aircraft. Accessed 5 October 2008.
Trimble, Stephen (May 2010), "Boeing plots return to next-generation fighter market", The Dewline, Flight Global, archived from the original on 10 May 2010, retrieved 6 August 2011.