Indriawati, Anisa, Herman Aldila, and Verry Fabiani. “Synthesis of Rare Earth Metal Oxides Based on Monasite Sand With PH Variations”. Stannum : Jurnal Sains dan Terapan Kimia 2, no. 2 (October 31, 2020): 36-39. Accessed April 18, 2024. https://journal.ubb.ac.id/stannum/article/view/1953.