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Bauer, T., Delsahut, F., & Leconte, M. P. (2020). Sporting indianness: Challenging the cinematic representation of Native American athletes. Sport in Society, 24(5), 731–747. https://doi.org/10.1080/17430437.2020.1826163 
Delsahut, F. (2019). The revoking and returning of Jim Thorpe’s Olympics awards: 70 years of Native-American sports protest? Sport in Society, 22(11), 1769–1782. https://doi.org/10.1080/17430437.2019.1625551 
Lang, B. (n.d.). Are North American sports fans offended by the Redskins team name? A demographic analysis – proquest. Proquest. https://www.proquest.com/openview/195206ffb6a6c4c282649948f3380ca8/1?pq-origsite=gscholar&cbl=44018 
these are the citations
research question-“What is the reason on Native Americans not being represented throughout sports?”