@unpublished{repository19829,
           title = {SK, BAP, Daftar Hadir, DPNA Pendidikan IPA di SD 3G},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/19829/},
          author = {Gufron Amirullah, Gufron}
}