SILABAN, P. J.; SINURAYA, E. E.; AGUSTIN, T.; SINAGA, K. T.; PARHUSIP, W. P. Demonstrasi Alat Peraga Papan Simetri Putar Di UPT SD Negeri 067244 Medan. Jurnal Pengabdian Masyarakat Bangsa, [S. l.], v. 1, n. 8, p. 1526–1529, 2023. DOI: 10.59837/jpmba.v1i8.111. Disponível em: https://jurnalpengabdianmasyarakatbangsa.com/index.php/jpmba/article/view/111. Acesso em: 22 apr. 2026.