Zimmermann, Peter (2005). Hoffmann, Kay (ed.). "Propagandafilme der NSDAP". Geschichte des dokumentarischen Films in Deutschland. Band 3 'Drittes Reich' 1933-1945 (in German). Reclam. Archived from the original on 2007-09-27. Retrieved 2007-10-31.
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Zimmermann, Peter (2005). Hoffmann, Kay (ed.). "Propagandafilme der NSDAP". Geschichte des dokumentarischen Films in Deutschland. Band 3 'Drittes Reich' 1933-1945 (in German). Reclam. Archived from the original on 2007-09-27. Retrieved 2007-10-31.