MAHENDRA, Surya; AHFAS, Akhmad. Polar Machine Maintenance: Pemeliharaan Mesin Polar. Procedia of Engineering and Life Science, [S. l.], v. 5, p. 432–437, 2024. DOI: 10.21070/pels.v7i0.1498. Disponível em: https://pels.umsida.ac.id/index.php/PELS/article/view/1498. Acesso em: 27 jun. 2025.