Yeni D. Fonataba, Ronaldo Kho, Bettisari Napitupulu, Irfan Wahyudi, and Happy Lumbantobing. “Ethnomathematics at TIFA Yapen As A Source for Learning Mathematics”. Hipotenusa: Journal of Mathematical Society 5, no. 2 (December 17, 2023): 132–146. Accessed November 23, 2024. https://ejournal.uinsalatiga.ac.id/index.php/hipotenusa/article/view/536.