Permana, Cepi Rahmatullah, Cahyo Budiyantoro, and Bayu Prabandono. “Manufaktur Dan Uji Kinerja Proses Vacuum Forming Untuk Bahan Polymethyl Methacrylate (PMMA)”. JMPM (Jurnal Material dan Proses Manufaktur) 3, no. 1 (February 11, 2020): 1–9. Accessed May 15, 2025. https://journal.umy.ac.id/index.php/jmpm/article/view/4860.