@unpublished{repository48116,
           title = {Bukti ento 6B},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
            note = {Unpublished},
          author = {Nikmatullah, Nurul Azmah},
             url = {http://repository.uhamka.ac.id/id/eprint/48116/}
}