?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Sari&rft.au=Sari%2C+Ainul+Duma&rft.aufirst=Ainul+Duma&rft.inst=Universitas+Negeri+Padang&rft.date=2016&rft.degree=Bachelor%2FSkripsi&rft.title=Improving+Elementary+School+Students%E2%80%99+Speaking+Skill+Ability+Using+Pass+Ball+Game.