?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Von.&rft.au=Von.%2C+Dantes%2C+Almer+Safero&rft.aufirst=Dantes%2C+Almer+Safero&rft.title=Using+Facebook+Group+Comment+as+a+Reinforcement+activity+in+Teaching+Writing+to+Senior+High+School+Students.&rft.degree=Bachelor%2FSkripsi&rft.inst=Universitas+Negeri+Padang&rft.date=7+August+2017