Sources - Inequity in sports

http://www.womenssportsfoundation.org/en/home/research/articles-and-reports/equity-issues/pay-inequity

http://www.economist.com/blogs/economist-explains/2014/07/economist-explains-19

http://www.active.com/swimming/articles/men-vs-women-in-endurance-sports

http://mujerydeporte.org/articulos/ver_articulo.asp?Id_noticia=223

http://hoy.com.do/factores-de-la-inequidad-de-genero-en-el-deporte/