wyk, Donald L.; Nicosia, Francis R. (2000). The Columbia Guide to the Holocaust. New York: Columbia University Press. ISBN 978-0-231-11200-0. {{cite book}}: Invalid |ref=harv (help)O'Donnell, James P. (2001) [1978]. The Bunker. New York: Da Capo Press. ISBN 978-0-306-80958-3. {{cite book}}: Invalid |ref=harv (help)Overy, Richard; Wheatcroft, Andrew (1989). The Road To War. London: Macmillan. ISBN 978-0-14-028530-7. {{cite book}}: Invalid |ref=harv (help)Overy, Richard (1999). "Germany and the Munich Crisis: A Mutilated Victory?". In Lukes, Igor; Goldstein, Erik (eds.). The Munich Crisis, 1938: Prelude to World War II. London; Portland, OR: Frank Cass. OCLC 40862187.Overy, Richard (1999). "Misjudging Hitler". In Martel, Gordon (ed.). The Origins of the Second World War Reconsidered. London: Routledge. pp. 93–115. ISBN 978-0-415-16324-8.Overy, Richard (2005). The Dictators: Hitler's Germany, Stalin's Russia. Penguin Books. ISBN 978-0-393-02030-4. {{cite book}}: Invalid |ref=harv (he