?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Roza&rft.aufirst=Kamelia&rft.au=Roza%2C+Kamelia&rft.inst=Universitas+Muhammadiyah+Prof.+DR.+HAMKA&rft.degree=Bachelor&rft.date=2021&rft.title=Analisis+Perbandingan+Return+Saham+Jakarta+Islamic+Index+Sebelum+dan+pada+Saat+Pandemic+Covid+19&rft.tpages=26