A. Zulkefle, M., R. A. Rahman, M. Rusop, W. F. H. Abdullah, and S. H. Herman. 2018. “Porous TiO2 Thin Film for Egfet PH Sensing Application”. International Journal of Engineering & Technology 7 (4.42): 112-14. https://doi.org/10.14419/ijet.v7i4.42.25690.