Rujukan OKH

  • O'Neill, Robert.J. The German Army and the Nazi Party, 1933-1939 (Corgi Books, 1968)
  • Zentner, Christian Ed; Bedürftig, Friedemann Ed (1991). The Encyclopedia of the Third Reich (in English). New York: Macmillan. p. 1150. ISBN 0-02-897502-2.