?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=1013079281%2C+Sopiyah&rft.aulast=1013079281&rft.aufirst=Sopiyah&rft.date=2013&rft.atitle=PENINGKATAN+AKTIVITAS+DAN+HASIL+BELAJAR+MATEMATIKA+MELALUI+COOPERATIVE+LEARNING+TYPE+STUDENT+TEAM+ACHIEVEMENT+DIVISIONS+SISWA+KELAS+IV+SDN+4+JATIMULYO+TAHUN+PELAJARAN+2012%2F2013&rft.title=Digital+Library&rft.genre=article