@unpublished{repository55464,
       publisher = {Universitas Muhammadiyah Prof Dr HAMKA},
            note = {Unpublished},
           title = {Bukti Ajar Kuliah IDI PBI 6B},
             url = {http://repository.uhamka.ac.id/id/eprint/55464/},
          author = {Rosyidi, Muhib}
}