?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Yenita&rft.au=Yenita%2C+Desli&rft.aufirst=Desli&rft.inst=Universitas+Negeri+padang&rft.degree=Bachelor%2FSkripsi&rft.date=August+2012&rft.title=Using+Mystery+PI%3A+The+Lottery+Ticket+Game+to+Enrich+Vocabulary+of+Elementary+School+Students