Silaban, P.J., Tarigan, H.M., Sinurat, T.L., Tarigan, N.B. and Tafonao, R.P. 2023. Sosialisasi Alat Peraga Bilangan Bulat Petak Pintar UPT SDN 067244 Medan. Jurnal Pengabdian Masyarakat Bangsa. 1, 9 (Nov. 2023), 1802–1805. DOI:https://doi.org/10.59837/jpmba.v1i9.138.