Nusyura Al Islami, Auliya, Wiwik Rahayu, and Budi Susilo Soepandji. “Effect of Propylene Glycol and Laterite on California Bearing Ratio of Clay Shale”. International Journal of Engineering & Technology 7, no. 4.36 (December 9, 2018): 383–385. Accessed May 2, 2024. https://sciencepubco.com/index.php/ijet/article/view/23807.