Tulia, M. S. (2023) “Application of Problem Based Learning Models with Realistic Mathematics Approach in Learning of Two Variables Linear Equations Systems”, Numerical: Jurnal Matematika dan Pendidikan Matematika, 6(2). Available at: https://journal.iaimnumetrolampung.ac.id/index.php/numerical/article/view/3836 (Accessed: 6 July 2025).