Sidabutar, R., Y. Saragi, and J. Situmorang. “Korelasi Hambatan Konus Dengan California Bearing Ratio Lapangan Pada Tanah Lempung”. SPROCKET JOURNAL OF MECHANICAL ENGINEERING, Vol. 4, no. 2, Feb. 2023, pp. 114-25, doi:https://doi.org/10.36655/sprocket.v4i2.917.