Aina Nabila Rosli, et al. “Green Synthesis of ZnO Oxide Nanoparticles Using Acorus Calamus Leaf Extract: Effect of Solution PH”. Multidisciplinary Applied Research and Innovation, vol. 5, no. 1, Jan. 2024, pp. 14-19, https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/13799.