?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Siti&rft.aulast=Fatimah&rft.au=Fatimah%2C+Siti&rft.atitle=Public+Historian+Period+Pandemic%3A+Impact+Overview+COVID-19+to+Tourism+Sector+and+Sustainability+Society+Economy+Bukittinggi&rft.date=March+2021&rft.title=Ilkogretim+Online+-+Elementary+Education+Online&rft.volume=20&rft.issue=1&rft.pages=1597-1603&rft.genre=article