Shahruddin, Munawar Zaman, et al. “Study of the Effectiveness of Titanium Dioxide (TiO2) Nanoparticle in Polyethersulfone (PES) Composite Membrane for Removal of Oil in Oily Wastewater”. Journal of Applied Membrane Science & Technology, vol. 19, no. 1, Nov. 2017, doi:10.11113/amst.v19i1.21.