@unpublished{UNY2505,
            year = {2010},
          school = {UNY},
           title = {Meningkatkan Kemampuan Komunikasi Matematika Siswa Kelas XI IPA SMA Negeri 1 Mlati Melalui Cooperative Learning Tipe Student Teams-Achievement Division (STAD)},
          author = {Atikah Ummi},
             url = {http://eprints.uny.ac.id/2505/}
}