HASIBUAN, C. F. The Instensity Measurement And Noise Mapping in Fatty Acid Plant Area At PT. XYZ. Simetrikal: Journal of Engineering and Technology, [S. l.], v. 2, n. 1, p. 20–27, 2020. DOI: 10.32734/jet.v2i1.3556. Disponível em: https://talenta.usu.ac.id/jet/article/view/3556. Acesso em: 26 aug. 2025.