@phdthesis{UNY2254,
            year = {2010},
          school = {UNY},
          author = {Najah Ulin},
           title = {MENINGKATKAN KEMANDIRIAN BELAJAR MATEMATIKA SISWA SMA KOLOMBO KELAS XI IPA DENGAN MENGGUNAKAN PENDEKATAN STUDENT ACTIVE LEARNING (SAL)},
           month = {July},
             url = {http://eprints.uny.ac.id/2254/}
}