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MI5, Hitler's Last Days: "Hitler's will and marriage" on the website of MI5, using the sources available to Trevor-Roper (a World War II MI5 agent and historian/author of The Last Days of Hitler), records the marriage as taking place after Hitler had dictated his last will and testament. "Hitler's Last Days". mi5.gov.uk. MI5 Security Service. Retrieved 19 April 2020.
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Ziemke 1969, p. 92. Ziemke, Earl F. (1969). Battle for Berlin: End of the Third Reich. Ballantine's Illustrated History of World War II. Vol. Battle Book #6. London: Ballantine Books. OCLC23899.
Gellately 1996. Gellately, Robert (1996). "Reviewed work(s): Vom Generalplan Ost zum Generalsiedlungsplan by Czeslaw Madajczyk. Der "Generalplan Ost". Hauptlinien der nationalsozialistischen Planungs- und Vernichtungspolitik by Mechtild Rössler; Sabine Schleiermacher". Central European History. 29 (2): 270–274. doi:10.1017/S0008938900013170. ISSN0008-9389.
Steinberg 1995. Steinberg, Jonathan (June 1995). "The Third Reich Reflected: German Civil Administration in the Occupied Soviet Union, 1941–4". The English Historical Review. 110 (437): 620–651. doi:10.1093/ehr/CX.437.620. OCLC83655937.
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