"Gedenkstätte Colditz"Archived March 21, 2012, at the Wayback Machine Club Courage, e.V., republished from Leipziger Volkszeitung - Muldentaler Kreiszeitung (March 31, 2007). Retrieved March 28, 2011 (in German)
"Gedenkstätte Colditz"Archived March 21, 2012, at the Wayback Machine Club Courage, e.V., republished from Leipziger Volkszeitung - Muldentaler Kreiszeitung (March 31, 2007). Retrieved March 28, 2011 (in German)