@phdthesis{UNY1437,
          author = {WIDYA IRIANI ATNI},
           title = {UPAYA MENINGKATKAN KEMANDIRIAN BELAJAR DAN PENGUASAAN KONSEP MATEMATIKA SISWA KELAS VI SD NEGERI CEPAGAN 01 BATANG MELALUI PROBLEM BASED LEARNING },
           month = {July},
            year = {2010},
          school = {UNY},
             url = {http://eprints.uny.ac.id/1437/}
}