@unpublished{repository12395,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {HKI 1\_Perangkat Pemb. GeoGebra},
          author = {RIZKI DWI SISWANTO, RDS},
             url = {http://repository.uhamka.ac.id/id/eprint/12395/}
}