^Pohl, Michael, Johann S. Bach, Felix Mendelssohn-Bartholdy, Josef Rheinberger, Max Reger, Max Reger, Max Reger, Max Reger, and Max Reger (1993). Die Grosse Sauer-Orgel Im Berliner Dom (Sound recording). Düsseldorf, Germany: Motette. OCLC33188606.
^Fest, Joachim (2007), Albert Speer: Conversations with Hitler's Architect, translated by Patrick Camiller, Polity Press, ISBN978-0-7456-3918-5 OCLC 940701858.[page needed]