Referencias

 

Links de las imágenes de bienvenida:
https://luismiguelguerrero.files.wordpress.com/2010/10/nfl.jpg?w=585
http://periodicoabc.blob.core.windows.net.optimalcdn.com/images/2016/07/27/futbolamericano.jpg
http://www.listaspop.com/wp-content/uploads/02-valentines-day-super-bowl-2015-angels-behin.jpg
https://media.deseretdigital.com/file/4cc1d66587.jpg?crop=top_0~left_0~width_700~height_500&resize=width_630~height_450&c=9&a=f3d0da85


Links de los antecedentes, informacion e imagenes: 
-https://media.deseretdigital.com/file/4cc1d66587.jpg?crop=top_0~left_0~width_700~height_500&resize=width_630~height_450&c=9&a=f3d0da85
-http://blogs.as.com/.a/6a00d83451bf7069e20147e3764a7c970b-pi
-https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiShnIdKrApb8LpcJVSlOKPvf1h1GkKwp5i7swi_nNPSeYluOWukG36WIqwpBuOxaoRv3CuhzWg2SYzJ6iKE41WCdsn1NhwWUwP66U6j06m-HM9B-b3NjuxFYrCFZA8soh2fJKHkDwYk_A/s1600/Jim+Thorpe.jpg
-https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2Qz16-MAJsKtIYlaANvxdmuVequmzDO9Nvx7tU7ho6wrd8xCiYuOtV8g2OF8bwd3fLRp_nyzkG6sAClXnfv-mMkopvoBMizmOIWTbWeiiGHHKcDGY7qFhP-xwiiY9nAhoeAsh0unP6uE/s1600/Probando+casos+f%C3%BAtbol+americano.jpg
-http://www.pitlane.mx/img/fa-antiguo.jpg
-https://es.wikipedia.org/wiki/Historia_del_f%C3%BAtbol_americano

Links de el contenido, informacion e imagenes
-http://www.taringa.net/post/info/4128606/Todo-sobre-futbol-americano.html
-http://deportes.about.com/od/Otros_deportes_y_competiciones/a/Futbol-Americano-Conceptos-Basicos.htm
-http://deportes.starmedia.com/imagenes/2015/11/futbol_americano_destacada.jpg
- https://es.wikipedia.org/wiki/Lingerie_Football_League#Concepto
-http://definicion.de/rugby/
-http://defutbolamericano.jimdo.com/campo-de-juego/el-bal%C3%B3n/

Referencias, Links de las imagens.
-http://cdn.expansion.mx/media/2015/07/27/balones.jpg
-http://www.zonacentronoticias.com/wp-content/uploads/2011/03/BAL%C3%93N-AMERICANO.jpg
https://secure.static.tumblr.com/9737e3c054d9b2ac886d559150d7df9d/itatzkj/9BNnnzkw3/tumblr_static_tumblr_static_5plaqvug0vswk0gg4s04scs8g_640.jpg
-http://iesjardinmalaga.wikispaces.com/file/view/flag_football1.jpg/283936134/flag_football1.jpg