Hadi, Usaamah, 		Hidayah, Entin, AND 		Halik, Gusfan.
" EVALUATION OF DRAINAGE SYSTEM PERFORMANCE AT MEDOKAN AYU DISTRICT SURABAYA CITY" <em>Jurnal Rekayasa Sipil dan Lingkungan</em> [Online], Volume 3 Number 1 (3 June 2019)