Tham khảo Lockheed_C-121_Constellation

Chú thích
  1. ↑ Breffort, Dominique. Lockheed Constellation: from Excalibur to Starliner Civilian and Military Variants. Histoire and Collecions, 2006, p. 166 to p. 169.
  2. ↑ C-69/C-121 - US Warplanes.net; Retrieved 11/6/11
  3. 1 2 Breffort, Dominique. Lockheed Constellation: from Excalibur to Starliner Civilian and Military Variants. Histoire and Collecions, 2006, p. 175.
Tài liệu
  • Breffort, Dominique. Lockheed Constellation: from Excalibur to Starliner Civilian and Military Variants. Paris: Histoire and Collecions, 2006. Print. ISBN 2-915239-62-2