1. Associated Press. (2004, December 12). Klitschko remains a champion in a dominant show of force. https://www.nytimes.com/2004/12/12/sports/boxing-klitschko-remains-a-champion-in-a-dominating-show-of-force.html
2. Associated Press. (2014, March 29). Vitali Klitschko adds heavyweight support to Ukraine’s chocolate king. https://www.theguardian.com/world/2014/mar/30/klitschko-heavyweight-ukraines-chocolate-king