NUSUFI, Maemun. MELATIH KONSENTRASI DALAM OLAHRAGA. JURNAL ILMU KEOLAHRAGAAN, [S. l.], v. 15, n. 2, p. 54–61, 2017. DOI: 10.24114/jik.v15i2.6139. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/JIK/article/view/6139. Acesso em: 7 jun. 2025.