?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=1113119016+%2C+MARHEDAH&rft.aulast=1113119016+&rft.aufirst=MARHEDAH&rft.date=11+Pebruari+2016&rft.atitle=PENINGKATAN+AKTIVITAS+DAN+HASIL+BELAJAR+SISWA+MELALUI+MODEL+COOPERATIVE+LEARNING+TIPE+SNOWBALL+THROWING+PADA+PEMBELAJARAN+ILMU+PENGETAHUAN+ALAM+DI+KELAS+III+SDN+8+GADINGREJO+KABUPATEN+PRINGSEWU+TAHUN+2012%2F2013+&rft.title=digilib+library&rft.genre=article