S. Madsen, Lennart (4 February 2012). "HADERSLEV BYS HISTORIE". museum-sonderjylland.dk/ (in Danish). Archived from the original on 15 March 2012. Retrieved 4 February 2012.
S. Madsen, Lennart (4 February 2012). "HADERSLEV BYS HISTORIE". museum-sonderjylland.dk/ (in Danish). Archived from the original on 15 March 2012. Retrieved 4 February 2012.