ASHARI, Nur Wahidin; SALWAH, Salwah. Problem Based Learning Untuk Meningkatkan Self Directed Learning Dalam Pemecahan Masalah Mahasiswa Calon Guru: Suatu Studi Literatur. Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika, [S. l.], v. 1, n. 1, p. 24–31, 2018. Disponível em: https://www.e-journal.my.id/proximal/article/view/181. Acesso em: 8 jul. 2025.