?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Imas+Ratna+Ermawati%2C+IRE&rft.aufirst=IRE&rft.aulast=Imas+Ratna+Ermawati&rft.title=The+Effect+of+Character-Based+Teaching+Flipbook+Media+on+The+Results+of+Calculus+Learning&rft.atitle=The+Effect+of+Character-Based+Teaching+Flipbook+Media+on+The+Results+of+Calculus+Learning&rft.genre=article