?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Hayati+MS&rft.au=Hayati+MS%2C+Indah&rft.aufirst=Indah&rft.title=Pengaruh+Model+Problem+Based+Learning+(PBL)+terhadap+Keterampilan+Menulis+Karangan+Deskripsi+Siswa+Kelas+X+SMA+Negeri+1+Sitiung&rft.degree=Bachelor%2FSkripsi&rft.inst=Universitas+Negeri+Padang&rft.date=2014