@unpublished{repository5801,
           title = {Berkas Ajar 1b},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof.Dr.HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/5801/},
          author = {rahayu, nur setiawati}
}