Zulkarnain, Anis Syahirah, et al. “The Use of Areca Nut Fiber in Soundproof Particle Board Manufacturing”. Multidisciplinary Applied Research and Innovation, vol. 4, no. 2, Jan. 2023, pp. 10-16, https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/8416.