@book{repository574,
           title = {Modul Mata Pelajaran Sejarah SMA Kelas XI},
            year = {2014},
       publisher = {Kementerian Pendidikan dan Kebudayaan},
             url = {http://repository.uhamka.ac.id/id/eprint/574/},
          author = {Gunawan, Rudy}
}