ISKANDAR, D.; RAMADAN, G. The development of a concentration training model on free throw shots basketball players. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, [S. l.], v. 5, n. 1, p. 1–15, 2019. DOI: 10.29407/js_unpgri.v5i1.12493. Disponível em: https://ojs.unpkediri.ac.id/index.php/pjk/article/view/12493. Acesso em: 5 jan. 2025.