@unpublished{repository44332,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
       booktitle = {Kelas 4 SD Buku  Ajar Bahasa Indonesia},
          editor = {Sri Mulyani Sri Mulyani},
           title = {Kelas 4 SD Buku Ajar Bahasa Indonesia},
             url = {http://repository.uhamka.ac.id/id/eprint/44332/}
}