Putri, B. A., & Zulmiyetri, Z. (2024). Improve the Ability to Recognize Vowal Letters through the Media Sand Paper Letter Modification in Deaf Children. Edumaspul: Jurnal Pendidikan, 8(1), 1540-1544. Retrieved from https://ummaspul.e-journal.id/maspuljr/article/view/7864