Sudrajat, K. M., Nuraini, A., Isradi, M., Prasetijo, J., & Hamid, A. (2023). Effect of Fly Ash Addition in West Jakarta Cengkareng Area Soil on CBR Value. Engineering And Technology Journal, 8(9), 2795–2800. https://doi.org/10.47191/etj/v8i9.11