SYAMSUDIN, Syamsudin. Problem Based Learning dalam Mengembangkan Kemampuan Berpikir Kritis dan Keterampilan Sosial. ELSE (Elementary School Education Journal): Jurnal Pendidikan dan Pembelajaran Sekolah Dasar, [S. l.], v. 4, n. 2, p. 81–99, 2020. DOI: 10.30651/else.v4i2.4610. Disponível em: https://journal.um-surabaya.ac.id/pgsd/article/view/4610. Acesso em: 5 dec. 2025.