Rujukan Bola sepak Amerika

  1. ↑ "GFL - German Football League" (dalam bahasa German). GFL. Dicapai 2016-06-09. Selenggaraan CS1: Bahasa yang tidak dikenali (link)
  2. ↑ "FIF - Federazione Italiana Football" (dalam bahasa Italian). FIF. 4 April 2009. Dicapai 2009-04-05. Selenggaraan CS1: Bahasa yang tidak dikenali (link)
  3. ↑ "SAFV - Schweizerischer American Football Verband" (dalam bahasa German). SAFV. Dicapai 2009-05-19. Selenggaraan CS1: Bahasa yang tidak dikenali (link)
  4. ↑ Superserien on www.amerikanskfotboll.com (Swedish)
  5. ↑ "The History of Football". The History of Sports. Saperecom. 2007. Dicapai 2007-05-15. 
  6. ↑ "Camp and His Followers: American Football 1876–1889". The Journey to Camp: The Origins of American Football to 1889. Professional Football Researchers Association. Dicapai 2007-05-16. 
  7. ↑ "NFL History 1869–1910". NFL.com. NFL Enterprises LLC. 2007. Dicapai 2007-05-15. 
  8. ↑ "Super Bowl dethrones 'M*A*S*H,' sets all-time record". The Live Feed. Feb. 8, 2010.  Check date values in: |date= (bantuan)

Berkaitan