BUTAR-BUTAR, Marintan. PERANAN MODEL PROBLEM BASED LEARNING (PBL) PADA MATERI LIMIT FUNGSI ALJABAR KELAS XI SMA. Jurnal Pendidikan Tambusai, [S. l.], v. 2, n. 2, p. 877–881, 2018. DOI: 10.31004/jptam.v2i4.36. Disponível em: http://jptam.org/index.php/jptam/article/view/36. Acesso em: 5 apr. 2025.