Suwari, S., 		Riani, E., 		Pramudya, B., & 		Djuwita, I.
(2011).
 MODEL DINAMIK PENGENDALIAN PENCEMARAN AIR KALI SURABAYA.
<em>Bumi Lestari, 11</em>(2).
Retrieved from <a href="https://ojs.unud.ac.id/index.php/blje/article/view/144" target="_new">https://ojs.unud.ac.id/index.php/blje/article/view/144</a>