News. April 2006, 7 (2) [16 May 2018]. (原始内容存档于3 March 2016). Owner of WDEF, WDOD radio stations dies in Charlotte. The Chattanoogan. 23 April 2006 [16
February 2012]. Knut the Polar Bear Cub Overshadows the Cub Next Door. WDEF News(英语:WDEF-TV). 2007-04-18 [2007-11-18]. (原始内容存档于2007-12-17) (英语). Knut Feigning