@unpublished{repository4186,
           title = {BAP, Presensi, dan Nilai},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/4186/},
          author = {Erizal, Erizal}
}