Ali, N., S. Zaheer, W. A. Khan, and S. R. Malik. “Removal of Suspended Solids and Turbidity from Wastewater Using Natural & Primary Coagulant”. Journal of the Pakistan Institute of Chemical Engineers, vol. 45, no. 2, Dec. 2017, http://piche.org.pk/journal/index.php/jpiche/article/view/352.