ZULKARNAIN, R.; SURYATI, I.; PRATAMA, A. Analysis distribution sulfur dioxide and nitrogen dioxide concentration from PLTU Pangkalan susu with callpuff method. Jurnal Pendidikan Teknologi Kejuruan, Padang, Indonesia, v. 3, n. 4, p. 236–244, 2020. DOI: 10.24036/jptk.v3i4.15923. Disponível em: https://jptk.ppj.unp.ac.id/index.php/jptk/article/view/159. Acesso em: 13 mar. 2025.