?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Yuni&rft.aulast=Putri&rft.au=Putri%2C+Yuni&rft.inst=Universitas+Negeri+padang&rft.title=Pengaruh+Model+Pembelajaran+Kooperatif+Tipe+Numbered+Heads+Together+(NHT)+diikuti+Speed+Test+dan+Motivasi+terhadap+Hasil+Balajar+Fisika&rft.degree=Masters%2FTesis&rft.date=2013