อ้างอิง ของ ไฟรคอร์

  1. ↑ Haffner, Sebastian (2000). Defying Hitler. Picador. pp. 30–31, 33. ISBN 0-312-42113-3.
  2. ↑ William L. Shirer, The Rise and Fall of the Third Reich: A History of Nazi Germany, New York, NY, Simon & Schuster, 2011, p. 55
  3. ↑ Heiden, Konrad (1944). Der Fuehrer: Hitler's Rise to Power. Boston, MA: Houghton Mifflin Company. pp. 21–22.
  4. ↑ Heiden, Konrad (1944). Der Fuehrer: Hitler's Rise to Power. Boston, MA: Houghton Mifflin Company. pp. 23–24.
  5. ↑ Heiden, Konrad (1944). Der Fuehrer: Hitler's Rise to Power. Boston, MA: Houghton Mifflin Company. pp. 88–89.