“Analysis of Drinking Water Quality in One of the Spings in Umbul Songo, Kopeng, Semarang District: Analisis Kualitas Air Minum Pada Salah Satu Sumber Mata Air Di Umbul Songo, Kopeng Kabupaten Semarang”. Jurnal Lingkungan Nusantara (JLN), vol. 2, no. 1, Mar. 2025, pp. 29-45, https://journal.jantoscv.com/index.php/jln/article/view/8.