http://repository.uhamka.ac.id/id/eprint/12678/ Turnitin-11 Implementation of Online Learning during the Covid 19 Pandemic on Psychological Development of Grade 4 Students at SDN Kayuringin Jaya 01 Bekasi Puri, Pramudiani http://repository.uhamka.ac.id/id/eprint/12678/1/11_A_2021_Uji%20Turnitin%20Article_Psychology_Educatio_Annisa_Puri.pdf Unduh!