@unpublished{repository20712,
           title = {Kelas F2},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/20712/},
          author = {Maifitrianti, Maifitrianti}
}