Siburian, Repaldo, and Hairani Siregar. “Meningkatkan Semangat Belajar Matematika Kepada Anak Panti Asuhan Pintu Harapan Medan Demi Masa Depan”. Jurnal Pengabdian Masyarakat 3, no. 2 (November 7, 2022): 272-282. Accessed March 28, 2024. https://jurnal.stie.asia.ac.id/index.php/jpm/article/view/1098.