@phdthesis{UNY599,
          school = {UNY},
          author = {Apriyati Yeni},
           title = {PELAKSANAAN SUPERVISI PEMBELAJARAN OLEH KEPALA SEKOLAH DI SMA NEGERI 1 NGEMPLAK KABUPATEN SLEMAN},
            year = {2011},
             url = {http://eprints.uny.ac.id/599/}
}