Apuntes

https://en.wikipedia.org/wiki/El_Clásico

https://www.standard.co.uk/sport/football/el-clasico-history-real-madrid-vs-fc-barcelona-b928586.html

https://www.fcbarcelona.com/en/el-clasico

https://en.wikipedia.org/wiki/Madrid_Derby

https://www.managingmadrid.com/2019/9/23/20874641/a-complete-history-of-the-madrid-derby

https://en.wikipedia.org/wiki/Seville_derby

https://www.estadiodeportivo.com/especiales/el-derbi-sevilla/historia/

https://en.wikipedia.org/wiki/Superclásico

https://futbolretro.es/el-primer-superclasico-argentino/?lang=en

https://en.wikipedia.org/wiki/Paulista_Derby

https://www.90min.com/posts/6594746-corinthians-vs-palmeiras-brazil-s-derby-paulista-that-sees-football-take-centre-stage