@unpublished{repository12677,
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
           title = {Implementation of Online Learning during the Covid 19 Pandemic on Psychological Development of Grade 4 Students at SDN Kayuringin Jaya 01 Bekasi},
            note = {Unpublished},
          author = {Puri, Pramudiani},
             url = {http://repository.uhamka.ac.id/id/eprint/12677/}
}