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↑ Wolfe, Robert. “Analysis of the IRR File of Klaus Barbie”. National Archives - Nazi War Criminal Records Interagency Working Group. The U.S. National Archives and Records Administration. Truy cập ngày 3 tháng 1 năm 2017.
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Graham, Robert, and David Alvarez. (1998). Nothing Sacred: Nazi Espionage against the Vatican, 1939-1945. London: Frank Cass.
Loftus, John. (2010). America's Nazi Secret: An Insider's History. Waterwille: (Trine Day); ISBN978-1936296040.
Simpson, Christopher (1988). Blowback: The First Full Account of America's Recruitment of Nazis and Its Disastrous Effect on The cold war, Our Domestic and Foreign Policy. New York: (Grove/Atlantic); ISBN978-0020449959.
Steinacher, Gerald. (2006). The Cape of Last Hope: The Flight of Nazi War Criminals through Italy to South America, in Eisterer, Klaus and Günter Bischof (eds; 2006) Transatlantic Relations: Austria and Latin America in the 19th and 20th Century (Transatlantica 1), pp. 203–24. New Brunswick: Transatlantica.
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