Tarigan, Shiamny Nur Khair, Syahrul Humaidi, Martha Rianna, and Nurul Maulida R Nasution. “Effect of NaOH Concentration on Magnetic Properties and Structural Studies of MgFe2O4 Based on Natural Iron Sand Synthesized by Co-Precipitation Method”. Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram 11, no. 2 (April 30, 2023): 636–641. Accessed August 16, 2025. https://e-journal3.undikma.ac.id/index.php/prismasains/article/view/8092.