Tham khảo Heinkel_He_74

  1. ↑ Green 1972, p. 286.
  2. ↑ Lên độ cao 1.000 m (3.280 ft): 2,6 phút
  • Green, William (1972). Warplanes of the Third Reich. New York: Doubleday. ISBN 0-385-05782-2. 
  • Nowarra, Heinz J. (1977). Die deutsche Luftrüstung 1933-1945. Bonn: Bernard & Graefe. tr. Teil 2, p.184. 
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. tr. 502.