MAWADDAH, M.; KARIM, K.; SANAWATI, S. Meningkatkan Hasil Belajar Siswa Melalui Model Problem Based Learning dengan Cooperative Learning tipe Numbered Heads Together (NHT). Gawi: Journal of Action Research, [S. l.], v. 1, n. 1, p. 8–13, 2021. DOI: 10.59329/gawi.v1i1.2. Disponível em: https://www.pub.borneorec.com/index.php/gawi/article/view/2. Acesso em: 22 jul. 2026.