Fritzsche, Hans (10 September 2014). "Rundfunk im totalen Krieg" [Radio in Total War] (PDF) (in German). Archived from the original(PDF) on 10 September 2014. Retrieved 21 August 2022.
Fritzsche, Hans (10 September 2014). "Rundfunk im totalen Krieg" [Radio in Total War] (PDF) (in German). Archived from the original(PDF) on 10 September 2014. Retrieved 21 August 2022.