BR. GINTING, E. E. .; BANGUN, S. Y.; SIREGAR, S. Development of a digital app-based sambo sports book for students at high school level extracurricular activities. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, [S. l.], v. 10, n. 2, p. 320–334, 2024. DOI: 10.29407/js_unpgri.v10i2.23102. Disponível em: https://ojs.unpkediri.ac.id/index.php/pjk/article/view/23102. Acesso em: 22 dec. 2024.