Basra, Shahzad, Z. Iqbal, Khalil ur-Rehman, Hafeez Ur-Rehman, and M.F. Ejaz. 2014. “Time Course Changes in PH, Electrical Conductivity and Heavy Metals (Pb, Cr) of Wastewater Using Moringa Oleifera Lam. Seed and Alum, a Comparative Evaluation”. Journal of Applied Research and Technology 12 (3). https://doi.org/10.1016/S1665-6423(14)71635-9.