Bodian Davin Panggabean, and Frans Simbol Tambing. “Pengujian Sifat Kimia Dan Fisika Airtanah”. Jurnal Sains dan Teknologi 3, no. 2 (November 4, 2024): 01–08. Accessed December 29, 2024. https://ftuncen.com/index.php/SAINTEK/article/view/551.