Nona Diana MN, Sahidi S, Pamungkas D. Analisis Faktor Penyebab Kesulitan Belajar Matematika Siswa Kelas VIII SMP Negeri 4 Kota Sorong. theorema [Internet]. 2026 Jul. 31 [cited 2026 Aug. 16];7(1). Available from: https://e-journal.unimudasorong.ac.id/index.php/jurnaltheorema/article/view/5155