Brahmana, Simon S. “DAMPAK BUANGAN LUMPUR PANAS PORONG – SIDOARJO TERHADAP KUALITAS AIR KALI PORONG”. JURNAL SUMBER DAYA AIR 3, no. 4 (March 22, 2007): 9–18. Accessed October 6, 2024. http://jurnalsda-dev.pusair-pu.go.id/index.php/JSDA/article/view/100.