Hamizah Khalid, Nurul Ainul, and Alvin John Lim Meng Siang. “Review on Soil Improvement by Using Various Chemical Additives for Foundation ”. Journal of Sustainable Underground Exploration , vol. 1, no. 1, Dec. 2021, pp. 38-44, https://publisher.uthm.edu.my/ojs/index.php/j-sue/article/view/10419.