Isorna Folgar, Manuel, Antonio Rial Boubeta, and Raquel Vaquero-Cristóbal. “Motivaciones Para La práctica Deportiva En Escolares Federados Y No Federados (Motivations for Practicing Sports in Federate and Non-Federate Students)”. Retos 25 (January 1, 2014): 80–84. Accessed September 22, 2025. http://207.180.252.49/index.php/retos/article/view/34485.