Ali, H. E., N. K. Asmel, A. A. . Ganiyu, and H. Tijani. “Effect of Sodium Compounds Additives on the Strength of Cement-Stabilized Soils”. Engineering and Applied Science Research, vol. 47, no. 3, Sept. 2020, pp. 287-96, https://ph01.tci-thaijo.org/index.php/easr/article/view/225784.