Kastrena, Ervan, and Adang Suherman, Amung Ma’mun, Eka Nugraha. “Improve the Long Jump Student through Attitude Responsibility and Use Two Models”. Opción 350 (December 31, 2019): 1201-1214. Accessed December 5, 2025. https://produccioncientificaluz.org/index.php/opcion/article/view/30739.