Tindaon, Juwita, and Eti Muliani. 2021. “PENGARUH PEMBERIAN PENGUATAN (REINFORCEMENT) DI MASA COVID-19 TERHADAP HASIL BELAJAR SISWA KELAS V SD NEGERI 054870 TANJUNG JATI KEC. BINJAI”. JURNAL HANDAYANI PGSD FIP UNIMED 12 (2):48-55. https://doi.org/10.24114/jh.v12i2.34212.