@unpublished{repository48122,
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {Bukti Prak Proto 4B},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/48122/},
          author = {Nikmatullah, Nurul Azmah}
}