Sitepu, Widya, Jesika Siboro, Herlina Sidauruk, Sulastri Datubara, and Christian Manurung. “Kesamaan Unsur Matematika Pada Permainan Tradisional Hadangan Dan Makanan Tradisional Kue Lapis”. Jurnal Cendekia : Jurnal Pendidikan Matematika 9, no. 3 (November 27, 2025): 1625-1637. Accessed May 7, 2026. https://j-cup.org/index.php/cendekia/article/view/4247.