SYAFRI, Syafri. Improving agility and speed in playing soccer in first grade students in sd negeri no. 11 sungai apit kecataman sungai apit kabupaten siak. Jurnal Ilmiah Pendidikan Scholastic, [S. l.], v. 2, n. 1, p. 67–76, 2018. DOI: 10.36057/jips.v2i1.310. Disponível em: https://e-journal.sastra-unes.com/index.php/JIPS/article/view/310. Acesso em: 22 dec. 2024.