?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Nifriza&rft.au=Nifriza%2C+Ifna&rft.aufirst=Ifna&rft.inst=Universitas+Negeri+Padang&rft.degree=Masters%2FTesis&rft.date=2016&rft.title=An+Analysis+Of+Students%E2%80%99+Grammatical+Problems+and+Factors+Influencing+Them+in+Writing+Introduction+Chapter+of+Research+Proposal+at+The+Seventh+Semester+Students+of+STKIP+Abdi+Pendidikan+Payakumbuh