?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Zafit%2C+Vernika&rft.aulast=Zafit&rft.aufirst=Vernika&rft.title=Pengaruh+Model+Problem+Based+Learning+Berbasis+Tutor+Teman+Sebaya+terhadap+Literasi+Sains+Murid+Fase+E+SMA+Negeri+13+Padang&rft.inst=Universitas+Negeri+padang&rft.date=May+2026&rft.degree=Bachelor%2FSkripsi