?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Zulfa&rft.aulast=Yanroza&rft.au=Yanroza%2C+Zulfa&rft.inst=Universitas+Negeri+padang&rft.title=Pengembangan+Lembar+Kegiatan+Siswa+Berbasis+Contextual+Teaching+and+Learning+pada+Materi+Lingkaran+di+SMP&rft.degree=Masters%2FTesis&rft.date=2012