Nurhidayati, Nurhidayati. 2020. “Meningkatkan Prestasi Belajar Siswa Kelas I Melalui Model Problem Based Learning Dalam Materi Kegiatan Malam Hari Melalui Pelajaran Bahasa Indonesia”. Educatif Journal of Education Research 3 (3), 108-15. https://doi.org/10.36654/educatif.v3i3.62.