Ries, Francis. “El Autoconcepto físico En Adolescentes Sevillanos En función Del Sexo Y De La evolución De La Carrera Deportivo (Physical Self-Concept in Adolescents from Seville in Relation With Gender and the Evolution of Sport Career)”. Retos 19 (January 1, 2011): 38–42. Accessed September 6, 2025. http://www.revistaretos.org/index.php/retos/article/view/34635.