Ahdiaty, Rahmi, and Dewi Fitriana. “Pengambilan Sampel Air Sungai Gajah Wong Di Wilayah Kota Yogyakarta”. Indonesian Journal of Chemical Analysis (IJCA) 3, no. 2 (September 9, 2020): 65–73. Accessed March 28, 2024. https://journal.uii.ac.id/IJCA/article/view/15735.