Parmita, A. W. Y. P., G. U. N. Tajalla, A. W. Ismail, J. R. Rizal, and M. P. D. Lubis. “Eggshell Waste As a Potential Catalyst Support for Fe203/CaCO3 in Methylene Blue Degradation Process”. ITB Graduate School Conference, vol. 1, no. 1, Oct. 2022, pp. 263-71, https://gcs.itb.ac.id/proceeding-igsc/index.php/igsc/article/view/25.