Pendampingan Persiapan OSN Matematika 2025 bagi Siswa dan Guru SMP pada Materi Teori Bilangan. Journal of Community Services and Development, [S. l.], v. 2, n. 1, p. 155–160, 2026. DOI: 10.64619/v2i1.28. Disponível em: http://journal.lpp-chani.org/index.php/C-JCosDev/article/view/53. Acesso em: 25 may. 2026.