Silaban PJ, Barus FB, Simanjuntak J, Sinuhaji EF, Panjaitan NS. Sosialisasi Alat Peraga Jarimatika di UPT SD Negeri 065015 Medan Tuntungan. Jurnal Pengabdian Masyarakat Bangsa [Internet]. 2024 Feb. 2 [cited 2026 May 21];1(12):3329-33. Available from: https://jurnalpengabdianmasyarakatbangsa.com/index.php/jpmba/article/view/147