Kamaruzaman, A., and N. A. Che Lah. “Morphological Changes of ZnO Nanostructures Upon Addition of Trisodium Citrate (Na3C6H5O7) at Different Reaction Temperatures”. Journal of Modern Manufacturing Systems and Technology, vol. 5, no. 1, Feb. 2021, pp. 18-22, doi:10.15282/jmmst.v5i1.5891.