Silaban PJ, Gurning ARB, Siahaan S, Siregar S. Sosialisasi Alat Peraga Satuan Berat di UPT SD Negeri 067244 Kota Medan. Jurnal Pengabdian Masyarakat Bangsa [Internet]. 2023 Dec. 2 [cited 2026 May 10];1(10):2189-93. Available from: https://jurnalpengabdianmasyarakatbangsa.com/index.php/jpmba/article/view/139