MASHABAI, I.; IRAHAYU ASRAN, A. M. . Analysis of Downtime Problems on Elevator Machine at PT. Santosa Utama Lestari using Tree Diagrams. SAINTEKBU, [S. l.], v. 15, n. 01, p. 9–14, 2023. DOI: 10.32764/saintekbu.v15i01.3258. Disponível em: https://ejournal.unwaha.ac.id/index.php/saintek/article/view/3258. Acesso em: 9 may. 2024.