J. Abdul Halip, “Multifunctional Bookshelf Inspired by Petronas Twin Towers”, rmtb, vol. 3, no. 1, pp. 354–365, Jun. 2022, Accessed: Jul. 18, 2024. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/rmtb/article/view/7236