Durán, Ángel Luis. “High School Students’ Perceptions of Cooperativity and Competitiveness in Physical Education”. Lecturas: Educación Física y Deportes 30, no. 325 (June 1, 2025): 28-44. Accessed November 12, 2026. https://efdeportes.com/efdeportes/index.php/EFDeportes/article/view/8169.