Silaban, P.J., Ginting, E.F., Samosir, E.R., Tarigan, A.M.B. and Siringoringo, R. 2024. Sosialisasi Alat Peraga Perkalian Jarimatika di UPT SD Negeri 065015 Medan Tuntungan. Jurnal Pengabdian Masyarakat Bangsa. 1, 12 (Feb. 2024), 3341–3345. DOI:https://doi.org/10.59837/jpmba.v1i12.149.