Yudi Iswanto (2026) “Optimalisasi Preventive Maintenance Mesin Pemotong Multimaterial”, Jurnal Teknik Mesin, 6(1), hlm. 1–6. Tersedia pada: https://ejournal.polraf.ac.id/index.php/JTM/article/view/1490 (Diakses: 12 Oktober 2026).