Bonhoeffer, agent of grace [videorecording].

Britain and the Vatican during the Second World War by Owen Chadwick.

Exile in the Fatherland : Martin Niemöller's letters from Moabit Prison

German Catholics and Hitler's wars : a study in social control

The German churches under Hitler : background, struggle, and epilogue

Hitler's pope : the secret history of Pius XII by John Cornwell

The myth of Hitler's Pope : how Pope Pius XII rescued Jews from the Nazis

Pius XII and the Second World War : according to the Archives of the Vatican

Resisting the Third Reich : the Catholic clergy in Hitler's Berlin by Kevin P. Spicer.

The Vatican and communism in World War II : what really happened? by Robert A. Graham

Theological foundations