@unpublished{repository2824,
           title = {BAP,Nilai,Absen Persamaan Diferensial 4D},
       publisher = {Universitas Muhammadiyah Prof.DR.HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/2824/},
          author = {Faradillah, Ayu}
}