?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Asfira%2C&rft.au=Asfira%2C%2C+Novie&rft.aufirst=Novie&rft.inst=Universitas+Negeri+Padang&rft.date=2017&rft.degree=Bachelor%2FSkripsi&rft.title=The+Quality+of+PowerPoint+Slides+Made+by+English+Department+Students+of+Padang+State+University+in+Presenting+English+Course+Materials.