Qonita Tri Maulina, Halimatu Sa’diyyah, Cita Dwi Rosita, Wahyu Hartono. Systematic Literature Review Related to Learning Obstacles of Junior High School Students in Understanding Algebra Concepts. IJHESS [Internet]. 2024 Aug. 24 [cited 2025 Apr. 23];4(1). Available from: https://ijhess.com/index.php/ijhess/article/view/1121