Nuraini, M., M. Muhroji, and W. Ratnawati. “Peningkatan Keaktifan Belajar Melalui Model Problem Based Learning Pada Pembelajara IPS Bagi Siswa Sekolah Dasar”. Educatif Journal of Education Research, Vol. 4, no. 3, Sept. 2022, pp. 326-35, doi:10.36654/educatif.v4i3.246.