Tindaon J, Muliani E. PENGARUH PEMBERIAN PENGUATAN (REINFORCEMENT) DI MASA COVID-19 TERHADAP HASIL BELAJAR SISWA KELAS V SD NEGERI 054870 TANJUNG JATI KEC. BINJAI. JH [Internet]. 2021 Dec. 2 [cited 2025 Jan. 31];12(2):48-55. Available from: http://103.242.233.34/index.php/handayani/article/view/34212