Silahooy, Stevi. “Analisis Serbuk Silika Amorf (SiO2) Berbahan Dasar Pasir”. Science Map Journal 2, no. 2 (November 24, 2020): 75-78. Accessed November 24, 2024. https://ojs3.unpatti.ac.id/index.php/sciencemap/article/view/3818.