Sulasminah, Dwiyatmi, Abdul Hadis, and Dwi Wulandari. “Development of Smartboard Media to Improve Letter Recognition Ability for Students With Cerebral Palsy at Lutang State Special School”. Society 10, no. 2 (December 30, 2022): 556–570. Accessed August 30, 2025. https://www.societyfisipubb.id/index.php/society/article/view/461.