?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Dian+Rizky&rft.aulast=Utami&rft.au=Utami%2C+Dian+Rizky&rft.inst=Universitas+Negeri+Padang&rft.title=A+Grammatical+Error+Analysis+in+Writing+Descriptive+Paragraph+by+Students+of+SMP+Pembangunan+Laboratorium+UNP&rft.degree=Bachelor%2FSkripsi&rft.date=24+February+2015