?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Eko+Yayuk&rft.aulast=Wahyuningtiyas&rft.au=Wahyuningtiyas%2C+Eko+Yayuk&rft.inst=Universitas+Muhammadiyah+Prof.+DR.+Hamka&rft.title=Efektivitas+Pembelajaran+Daring+Di+Tengah+Pandemi+COVID-19+Pada+Lingkungan+Graha+Prima+Tambun+Selatan&rft.date=2020&rft.degree=Bachelor