Aisyah , H., P. Purwanto, and C. Tjang Daniel. “Students’ Concept Understanding in Solving Mathematical Literacy Problems on The Material of Linear Equations of Two Variables”. Vygotsky: Jurnal Pendidikan Matematika Dan Matematika, vol. 7, no. 2, Aug. 2025, pp. 81-96, doi:10.30736/voj.v7i2.1155.