?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Syae+Purrohman%2C+Purnama&rft.aulast=Syae+Purrohman&rft.aufirst=Purnama&rft.degree=Other&rft.inst=Universitas+Muhammadiyah+Prof.+DR.+HAMKA&rft.date=2+January+2021&rft.title=DHDHG