Mamede, Marlia, and Sennahati. “ANALISIS AIR ASAM TAMBANG UNTUK MENGURANGI KADAR SULFUR”. Cokroaminoto Journal of Chemical Science 5, no. 1 (February 24, 2023): 15–19. Accessed August 2, 2025. https://science.e-journal.my.id/cjcs/article/view/156.