Rosyid, H. A., U. Pujianto, and M. R. Yudhistira. “Classification of Lexile Level Reading Load Using the K-Means Clustering and Random Forest Method”. Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control, vol. 5, no. 2, May 2020, pp. 139-46, doi:10.22219/kinetik.v5i2.897.