@unpublished{repository50870,
           title = {sk, bap, dpna, absen},
       publisher = {Universitas Muhammadiyah Prof. Dr, Hamka},
            note = {Unpublished},
          author = {Erizal, Erizal},
             url = {http://repository.uhamka.ac.id/id/eprint/50870/}
}