@unpublished{repository20706,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
           title = {Kelas C1},
             url = {http://repository.uhamka.ac.id/id/eprint/20706/},
          author = {Maifitrianti, Maifitrianti}
}