1. Hitler, A. (1961). Hitler's Secret Book. Grove Press Inc., New York.
2. Stolk, PJ. (1968). Adolf Hitler, His Life and His Illnesses. Psychiat Neurol Neurochir 71: 381?398.
3. Speer, A. Winston, R. and Winston, C. (Trans.) (1980). Inside the Third Reich. Macmillan Publishing Co., New York.
4. Taylor, B. (1975) On Hiltgunt Margaret Zassenhaus: A Doctor Against Hitler. MD State Med J. 24: 61?2.
5. Cohan, AS. (1975) Politics and Psychoanalysis: The Sources of Hilter's Political Behaviour. Brit J International Studies I: 160?175.