Fadhillah, Ninik, Ma’arifMuh., Hanik Faizah, and Latifatoel Chilmi. “Kajian Kelayakan Sumber Air Tanah UIN Sunan Ampel Surabaya Dalam Rangka Menuju Eco Campus”. Al-Ard: Jurnal Teknik Lingkungan 5, no. 1 (December 18, 2019): 9-16. Accessed June 7, 2020. http://jurnalsaintek.uinsby.ac.id/index.php/alard/article/view/475.