Simanullang, Samuel Putra, Moh. Afandy, and Fikrah Dian Sawali. “Effectiveness of the Combination of Alum (Al₂(SO₄)₃) and Calcium Hydroxide (Ca(OH)₂) Coagulants in the Removal of Manganese (Mn) Using the Coagulation-Flocculation Process”. Stannum : Jurnal Sains dan Terapan Kimia 6, no. 2 (October 31, 2024): 71-78. Accessed January 17, 2025. https://journal.ubb.ac.id/stannum/article/view/4301.