?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Deddy+Cervin+Jhonson+Hutahaen&rft.aulast=41160014&rft.au=41160014%2C+Deddy+Cervin+Jhonson+Hutahaen&rft.date=13+February+2021&rft.inst=Universitas+Kristen+Duta+Wacana&rft.title=HUBUNGAN+KETERGANTUNGAN+SMARTPHONE+TERHADAP+MOTIVASI+BELAJAR+SISWA+SEKOLAH+MENENGAH+ATAS&rft.degree=Bachelor&rft.tpages=49