Abdul Rahim, Marham, and Emedya Murniwaty Samsudin. “Sound Absorption Performance of Ink-Tube Waste As Absorber”. Recent Trends in Civil Engineering and Built Environment 2, no. 1 (May 26, 2021): 87–93. Accessed July 2, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/rtcebe/article/view/1313.