@phdthesis{UNY33529,
          author = {Hendika Apriyanto},
           title = {Kompetensi Profesional Guru Sosiologi Dalam Proses Pembelajaran Di SMA Negeri 1 Kalasan},
            year = {2009},
          school = {FIS},
             url = {http://eprints.uny.ac.id/33529/}
}