Aldona, Y., 		Sampoerno, P., 		Hakim, L., & 		Wijayanti, D.
2022 Jan 21.  Giving an Individual Tutoring for 8th Grade Student in the Errors of Solving the Problem of Essay Test for Comparative Material in SMPN 232 Jakarta. Journal of Medives : Journal of Mathematics Education IKIP Veteran Semarang. [Online] 6:1