@unpublished{repository2255,
            note = {Unpublished},
       publisher = {MM UHAMKA},
            type = {Documentation},
           title = {2 Al Mubarok Surat Tugas, Und, materi},
             url = {http://repository.uhamka.ac.id/id/eprint/2255/},
          author = {Bambang, Dwi Hartono}
}