The Importance of Acoustic Quality in Classroom. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 70, n. 7, 2014. DOI: 10.11113/jt.v70.3581. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/3581.. Acesso em: 30 apr. 2025.