Peralta, G., 		Soriano, R., & 		Dizon, C.
(2021).
 Pollution Sources and Water Quality Assessment in Metro Manila and Laguna Lake Basins.
<em>Philippine Engineering Journal, 14</em>(1).
Retrieved from <a href="https://www.journals.upd.edu.ph/index.php/pej/article/view/8097" target="_new">https://www.journals.upd.edu.ph/index.php/pej/article/view/8097</a>