Siti Mandalawati, Iis, Asep Jihad, and Hamdan Sugilar. “Powtoon Media for the Understanding of Deaf Mathematics”. KnE Social Sciences 9, no. 8 (April 3, 2024): 562–571. Accessed February 6, 2025. http://thrillriftranks.com/index.php/KnE-Social/article/view/15615.