@unpublished{repository20815,
           title = {BAP, Presensi, Nilai bahan bakar dan pembakaran},
       publisher = {Universitas Muhammadiyah Prof. DR. Hamka},
            note = {Unpublished},
          author = {Nofendri, Yos},
             url = {http://repository.uhamka.ac.id/id/eprint/20815/}
}