Azmi, Mohammad Izzat Shaffiq, et al. “The Influence of Mineralogy Towards Electrical Resistivity Value and Cation Exchange Capacity”. Journal of Sustainable Underground Exploration , vol. 1, no. 1, Dec. 2021, pp. 52-57, https://publisher.uthm.edu.my/ojs/index.php/j-sue/article/view/10197.