Vílchez Conesa, Pilar, and Francisco Ruiz-Juan. “Clima Motivacional En Educación Física Y Actividad físico-Deportiva En El Tiempo Libre En Alumnado De España, Costa Rica Y México (Motivational Climate in Physical Education and Sport and Physical Activity in Leisure of Students from Spain, CR and Mexico)”. Retos 29 (January 1, 2016): 195–200. Accessed June 10, 2026. https://www.revistaretos.org/index.php/retos/article/view/42448.