I have read Mein Kampf, a collection of Hitler's comments spoken in private to friends, Nazi officials, and foreign dignitaries that is entitled Hitler's Table Talk 1941 - 1944, His Private Conversations,and finally My New Order. This is an anthology of Hitler's speeches.a. "Hitler often stated that he learned much from reading Marx, and the whole of National Socialism is doctrinally based on Marxism." George Watson, Historian, Cambridge.
In none of those books did Hitler ever acknowledge reading anything by Karl Marx.