@unpublished{repository51579,
       publisher = {Universitas Muhammadiyah Prof DR Hamka},
           title = {BAP , PRESENSI , KEHADIRAN},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/51579/},
          author = {Hendra Apriyadi, Hendra}
}