Johngika, Jaffner, and Zawati Harun. “Review On the Biosynthesis of Composite TiO2 - Inorganic Metal Oxide (Fe2O3): Photocatalytic and Antibacterial Purpose Of Wastewater Treatment”. Research Progress in Mechanical and Manufacturing Engineering, vol. 4, no. 1, Aug. 2023, pp. 504-17, https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/3723.