SILABAN, P. J.; TARIHORAN, A.; MANULLANG, N.; SURBAKTI, R. Sosialisasi Alat Peraga Satuan Panjang di UPT SD Free Methodist 2 Medan Helvetia. Jurnal Pengabdian Masyarakat Bangsa, [S. l.], v. 1, n. 11, p. 2765–2768, 2024. DOI: 10.59837/jpmba.v1i11.145. Disponível em: https://jurnalpengabdianmasyarakatbangsa.com/index.php/jpmba/article/view/145. Acesso em: 3 jul. 2026.