I. B. P. Mardana, Y. . Nur Lutfiyah, P. . Yasa, and G. K. . Agung Widiantara, “SYNTHESIS AND CHARACTERIZATION OF MAGNETITE FE3O4 NANOPARTICLES FROM NATURAL IRON SAND in GELAR RIVER”, IPR, vol. 7, no. 1, pp. 166–174, Jan. 2024.