Gula, Louie Petere, and Kevin Sumayang. “The Increasing Physical Inactivity of Teenagers Aged 12-16 Years Old of Saint Joseph College”. MEDIKORA 21, no. 1 (April 30, 2022): 1–11. Accessed May 15, 2025. https://jurnal.uny.ac.id/index.php/medikora/article/view/48553.