Antonius KAP Simbolon. ANALISIS KEBUTUHAN BAHAN AJAR MATEMATIKA SISWA SMP KELAS VIII. NHJ [Internet]. 2024 May 10 [cited 2025 Apr. 9];3(12):21-9. Available from: https://nusantarahasanajournal.com/index.php/nhj/article/view/1126