@unpublished{repository37018,
            note = {Unpublished},
           title = {ST, Sertif, Laporan},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/37018/},
          author = {Sulistyawati, Sulistyawati}
}