daus, firdaus. “Sustainable Drainage System Analysis In The Institut Teknologi Sumatera (ITERA)”. Journal of Engineering and Scientific Research 5, no. 2 (December 31, 2023): 85–90. Accessed January 15, 2026. https://jesr.eng.unila.ac.id.121-50-32-50.cpanel.site/index.php/ojs/article/view/139.