@unpublished{repository3597,
            note = {Unpublished},
           title = {Bap,Presensi,Nilai Kalkulus TI 2E},
       publisher = {Universitas Muhammadiyah Prof. Dr. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/3597/},
          author = {Heriyani, Oktarina}
}