@unpublished{repository6917,
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {BAP, Presensi, Nilai Kimia Teknik 1A},
            note = {Unpublished},
          author = {Rifky, Rifky},
             url = {http://repository.uhamka.ac.id/id/eprint/6917/}
}