?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Reni&rft.aulast=Astanti&rft.au=Astanti%2C+Reni&rft.inst=Universitas+Negeri+Padang&rft.title=Cohesive+Devices+in+Discussion+Texts+Written+by+the+Students+of+SMAN+12+Padang&rft.degree=Bachelor%2FSkripsi&rft.date=August+2016