SELVIA ERITA. Optimalisasi Keterampilan Berpikir Kritis melalui Model Problem Based Learning-Flipped Classroom. Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika, [S. l.], v. 6, n. 2, p. 34–42, 2023. DOI: 10.30605/proximal.v6i2.2617. Disponível em: https://www.e-journal.my.id/proximal/article/view/2617. Acesso em: 7 jul. 2025.