John Cornwell, Hitler's Pope: The Secret History of Pius XII (London, 1999), с. 96–7, 116-17, 120-51; с опорой на работу Klaus Scholder, The Churches and the Third Reich (2 vols., London, 1987-8 [1977, 1985]); Morsey, ‘Die Deutsche Zentrumspartei’, 301, — о давлении со стороны Ватикана.
