@thesis{thesis,
		author={Masholekhatin   Nurul Siti},
		title ={Pengaruh model pembelajaran Problem Based Learning (PBL) terhadap hasil belajar geogragi siswa kelas XI IPS SMA Negeri 6 Malang / Nurul Siti Masholekhatin},
		year={2013},
		url={http://repository.um.ac.id/99904/},
		abstract={Pengaruh Model Pembelajaran Problem Based Learning (PBL) Terhadap Hasil Belajar Geografi Siswa Kelas XI IPS SMA Negeri 6 Malang.}
		}