Faradilla, Hanifa, Rahmi Putri, dan Rilla Gina Gunawan. “Analysis of Problematics and Ability to Understand Algebraic Mathematical Concepts of Class X High School Students”. FARABI: Jurnal Matematika dan Pendidikan Matematika 7, no. 2 (Desember 30, 2024): 216–223. Diakses Agustus 20, 2025. http://siakad.univamedan.ac.id/ojs/index.php/JMPM/article/view/761.