Oktafia, Mesi, Aan Putra, and Mhmd Habibi. 2020. “The Analysis of Students’ Error in Operation Reseach Test for Linear Program Topic Based on Newman’s Error Analysis (NEA)”. Edumatika : Jurnal Riset Pendidikan Matematika 3 (2):103-12. https://doi.org/10.32939/ejrpm.v3i2.591.