Johar, Rahmah, and Khairiyah Rahma Lubis. “The Analysis of students’ Mathematical Representation Errors in Solving Word Problem Related to Graph”.
Jurnal Riset Pendidikan Matematika
, vol. 5, no. 1, May 2018, pp. 96-107, doi:10.21831/jrpm.v5i1.17277.