?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Rubiyanto%2C+Hamdi&rft.aufirst=Hamdi&rft.aulast=Rubiyanto&rft.inst=Sekolah+Pascasarjana+Uhamka&rft.date=19+February+2021&rft.degree=Masters