Training of simple fire installation for security guard at Samarinda State Polytechnic. Community Empowerment, [S. l.], v. 6, n. 12, p. 2172–2175, 2021. DOI: 10.31603/ce.6463. Disponível em: https://coba.unimma.ac.id/ce/article/view/6463. Acesso em: 30 sep. 2026.