Candra, P., A. Andriani, A. Hakam, and R. Apdeni. “Improvement of California Bearing Ratio (CBR) Value of Clay Soil in Limau Manis Area, Padang by Using Lime and Rice Husk Ash”. MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering, Vol. 6, no. 3, Nov. 2024, pp. 343-54, doi:10.46574/motivection.v6i3.390.