?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Betra&rft.aulast=Rahmadani&rft.au=Rahmadani%2C+Betra&rft.inst=Universitas+Negeri+Padang&rft.title=Alih+Kode+Tuturan+Guru+dalam+Proses+Belajar+Mengajar+di+SMP+Negeri+13+Padang&rft.degree=Bachelor%2FSkripsi&rft.date=15+February+2012