Are Football and Soccer dangerous sports?
“What in the name of high school football?” by Hank Hill, Literary Cavalcade, 00244511, Nov/Dec2002, Vol. 55, Issue 3. http://images.pcmac.org/SiSFiles/Schools/GA/CatoosaCounty/HeritageMiddle/Uploads/DocumentsCategories/Documents/sports%20articles.pdf
“High School, College Football Come with Risks.” by Jeffrey Perkel, ABC News. http://abcnews.go.com/Health/Healthday/story?id=4508074&page=1
“School Sports: The pros and cons” by Raven J. Railey
“Pushing too hard too young” by Jacqueline Stenson. http://www.courier-journal.com/article/20081228/FEATURES/812280310/School-sportsproscons
“Sports Injury Statistics,” from Stanford Children’s Health, February 9, 2016. http://www.stanfordchildrens.org/en/topic/default?id=sports-injury-statistics-90-P02787
“How Risky is Heading in Soccer?” The Opinion Pages: Room for Debate, New York Times, June 26, 2014. http://www.nytimes.com/roomfordebate/2014/06/26/how-risky-is-heading-in-soccer