@phdthesis{UNY543,
          author = {- Yustina },
            year = {2011},
           title = {PENGARUH STATUS SOSIAL EKONOMI ORANG TUA TERHADAP PRESTASI BELAJAR GEOGRAFI SISWA SMA NEGERI 1 MENJALIN KABUPATEN LANDAK},
          school = {UNY},
             url = {http://eprints.uny.ac.id/543/}
}