?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Widia+Anisa&rft.au=Widia+Anisa%2C+-&rft.aufirst=-&rft.title=STUDENTS%E2%80%99+PERCEPTION+TOWARDS+WRITING+PORTFOLIO+ASSESSMENT&rft.inst=Universitas+Pendidikan+Indonesia&rft.date=28+June+2011&rft.degree=S1