“Utilization of Areca Nut Fibers (areca Catechu l.) and Polyvinyl Chloride (PVC) As A Sound Absorbing Material”. Jurnal Teknik Mesin 14, no. 1 (April 30, 2023): 27–32. Diakses Agustus 21, 2025. https://jtm.itp.ac.id/index.php/jtm/article/view/770.