@unpublished{repository20815,
            note = {Unpublished},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