Hardi, Ikram, dan Surya Mardani. “Processing and Waste Water Quality in Arya Duta Makassar Hotel”. HIGIENE: Jurnal Kesehatan Lingkungan 1, no. 2 (Agustus 30, 2016): 100-108. Diakses September 19, 2025. https://tes-ojs.uin-alauddin.ac.id/index.php/higiene/article/view/1240.