Hernández A, Sánchez Matas Y, Nieto CM. Autoconcepto y Actividad física en escolares de 6º curso de Educación Primaria (Self-concept and Physical Activity in 6th grade Primary School Students). Retos [Internet]. 2023 Jan. 2 [cited 2025 Dec. 17];47:61-8. Available from: http://www.revistaretos.org/index.php/retos/article/view/94640