Fogarty, Gerald P. «A Pope in Wartime». America, 15-08-2008 [Consulta: 20 setembre 2009].
Book reviewArxivat 2006-09-26 a Wayback Machine. The Popes Against the Jews. The Vatican's Role in the Rise of Modern Anti-Semitism By David I. Kertzer
Laurentius Siemer; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
Max Josef Metzger; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
Konrad Graf von Preysing; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
Josef Frings; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
Lothar König; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
Otto Müller; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
Eduard Müller; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
Gertrud Luckner; German Resistance Memorial Centre, Index of Persons; retrieved at 4 September 2013
google.cat
books.google.cat
Bendersky, Joseph W., A concise history of Nazi Germany, p. 147, Rowman & Littlefield, 2007: "Consequently, it was Hitler's long range goal to eliminate the churches once he had consolidated control over his European empire."
Book reviewArxivat 2006-09-26 a Wayback Machine. The Popes Against the Jews. The Vatican's Role in the Rise of Modern Anti-Semitism By David I. Kertzer