^"Knut Tangen er død" (in Norwegian). Norwegian Skating Association (Norges Skøyteforbund). 2007-04-04. Archived from the original on 25 April 2012. Retrieved 20 October 2011.
^"Knut Tangen". SR/Olympic Sports. Sports Reference LLC. Archived from the original on 18 April 2020. Retrieved 6 April 2011.