Improving the competence of heavy machinery maintenance for the community of Loa Janan Ilir District, Samarinda. Community Empowerment, [S. l.], v. 7, n. 4, p. 646–649, 2022. DOI: 10.31603/ce.7015. Disponível em: https://journal.unimma.ac.id/ce/article/view/7015. Acesso em: 23 sep. 2026.