Aziz, Abdul, and Iswahyudi Joko Suprayitno. “Misunderstanding and Writing Signs in Mathematical Proof”. Education, Science, and Technology International Conference 2, no. 1 (August 24, 2024): 252–254. Accessed April 3, 2025. https://jurnalnew.unimus.ac.id/index.php/edusciencetech/article/view/584.