Halder, Kriegstagebuch, I. 79 (19 September 1939), 81 (20 September 1939), 107 (18 October 1939); Rossino, Hitler Strikes Poland, 14-16; см. также Heydrich’s later reference to Hitler’s order to exterminate the Polish intelligentsia in Krausnick, Hitler und die Morde in Pole.