?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Marlena%2C+1123031018&rft.aulast=Marlena&rft.aufirst=1123031018&rft.degree=Other&rft.date=2+Pebruari+2015&rft.title=DIFFERENCE+METHOD+OF+LEARNING+THROUGH+ECONOMIC+PROBLEM+SOLVING+AND+DISCUSSION+OF+VISIBLE+LEARNING+MOTIVATION+CLASS+XI+SMA+1+NATAR+YEAR+2012-2013+PERBEDAAN+HASIL+BELAJAR+EKONOMI+MELALUI+METODE+PROBLEM+SOLVING+DAN+DISKUSI+DILIHAT+DARI+MOTIVASI+BELAJAR+SISWA+KELAS+XI+SMA+NEGERI+1+NATAR+TAHUN+2012-2013&rft.inst=Universitas+Lampung