?url_ver=Z39.88-2004&rft_id=10.1109%2FICCOINS49721.2021.9497142&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Astuti&rft.au=Astuti%2C+S.&rft.aufirst=S.&rft.isbn=9781728171517&rft.date=2021&rft.title=Analysis+User+Interface%3A+Mobile+Application+to+Blended+Learning+Model&rft.genre=proceeding