1. Cole C. Marc Staal eye injury should be another wake-up call for NHL. National Post, March 7, 2013. sports.nationalpost.com/2013/03/07/marc-staal-eye-injury-should-be-another-wake-up-call-for-nhl. Accessed June 30, 2013.
2. McGran K. Place in trivia history awaits NHL’s last visor-less player. June 5, 2013. www.thestar.com/sports/hockey/2013/06/05/place_in_trivia_history_awaits_nhls_last_visorless_player.html. Accessed October 21, 2013.
3. The Canadian Press. Competition committee touts visors for future NHLers. June 4, 2013. www.tsn.ca/nhl/story/?id=424736. Accessed June 30, 2013.
4. Brophy M. NHL, NHLPA agree on mandatory visors. June 4, 2013. www.nhl.com/ice/news.htm?id=672983. Accessed June 30, 2013.
5. The effect of visors on head and facial injury in National Hockey League players;Stevens;J Sci Med Sport,2006