Fitra, Haznul, et al. “PENGARUH PENAMBAHAN SILIKA TERHADAP SIFAT FISIK DAN MEKANIK PMMA”. Scientica: Jurnal Ilmiah Sains Dan Teknologi, vol. 3, no. 6, Sept. 2025, pp. 1-11, https://jurnal.researchideas.org/index.php/scientica/article/view/1705.