@phdthesis{UNY16576,
          author = {Rizqa Devi Anazifa},
           title = {PENGARUH MODEL PEMBELAJARAN PROBLEM-BASED LEARNING TERHADAP
KEMAMPUAN BERPIKIR KRITIS (CRITICAL THINKING) DAN HASIL BELAJAR
SISWA PADA MATERI PENCEMARAN LINGKUNGAN KELAS X SMA NEGERI 1
BANTUL},
           month = {July},
            year = {2014},
          school = {UNIVERSITAS NEGERI YOGYAKARTA},
             url = {http://eprints.uny.ac.id/16576/}
}