Ginting, Segel. “Pemodelan Air Tanah Di Cekungan Air Tanah Umbulan Dengan Visual MODFLOW Premium 4.3”. JURNAL SUMBER DAYA AIR 6, no. 2 (April 3, 2018): 173–188. Accessed September 2, 2026. https://upgradeojs.rifqisyams.id/index.php/JSDA/article/view/414.