Silaban PJ, Sihombing RA, Silalahi TV, Harefa JG, Ginting ECB, Simamora R. Sosialisasi Alat Peraga Operasi Bilangan di SD Negeri Percobaan Pembina. Jurnal Pengabdian Masyarakat Bangsa [Internet]. 2023 Sep. 3 [cited 2026 Jul. 21];1(7):973-5. Available from: http://jurnalpengabdianmasyarakatbangsa.com/index.php/jpmba/article/view/103