“COMPARISON OF NORMAL INCIDENT SOUND ABSORPTION COEFFICIENT OF DIRECT PIERCING CARVED WOOD PANEL FOR CIRCULAR, GEOMETRY AND FLORAL DESIGN”.
Jurnal Teknologi (Sciences & Engineering) 78, no. 6-10 (June 25, 2016). Accessed April 10, 2025.
https://journals.utm.my/jurnalteknologi/article/view/9177.