Abbas LN, Md Khair SN, Md Amin ND. Exploring the Elements of Multimedia Needed for Deaf and Hearing-impaired Students in Polytechnics. oj-tp [Internet]. 2019 Oct. 30 [cited 2024 Jul. 30];4(2):77-82. Available from: https://penerbit.uthm.edu.my/ojs/index.php/oj-tp/article/view/5095