@unpublished{repository20708,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
           title = {Kelas C2},
             url = {http://repository.uhamka.ac.id/id/eprint/20708/},
          author = {Maifitrianti, Maifitrianti}
}