Suwari, Suwari, 		Riani, Etty, 		Pramudya, Bambang, AND 		Djuwita, Ita.
" MODEL DINAMIK PENGENDALIAN PENCEMARAN AIR KALI SURABAYA" <em>Bumi Lestari</em> [Online], Volume 11 Number 2 (1 August 2011)