Sim, Shin Ying, and Muhammad Fakri Othman. “Pocket Music Theory: The Development of Augmented Reality (AR) Basic Music Theory Learning Mobile Application”. Applied Information Technology And Computer Science 3, no. 2 (November 17, 2022): 647–666. Accessed July 21, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/aitcs/article/view/7483.