García Pacheco, Ángel Francisco, and María del Rocío Hernández Pozo. “Intervention Programs to Increase Physical Activity Among Elementary and Highschool Children: A Systematic Review”. Journal of Behavior, Health & Social Issues 3, no. 2 (March 12, 2012): 25–47. Accessed July 3, 2024. https://journals.unam.mx/index.php/jbhsi/article/view/29917.