SYAWALUDIN, M. R. . Pengembangan Perangkat Pembelajaran Matematika Berbasis Problem Based Learning (PBL) pada Materi Integral di Kelas X SMK. Indonesian Research Journal on Education, [S. l.], v. 4, n. 4, p. 1405 –, 2024. DOI: 10.31004/irje.v4i4.514. Disponível em: https://irje.org/irje/article/view/514. Acesso em: 24 oct. 2026.