Herdiansyah, Muhammad. “The Effect of Production Room Layout and Production Machine Maintenance on Production Effectiveness”. Almana : Jurnal Manajemen dan Bisnis 4, no. 2 (August 10, 2020): 297–308. Accessed January 22, 2026. https://journalfeb.unla.ac.id/index.php/almana/article/view/1420.