@unpublished{repository18000,
            note = {Unpublished},
           title = {Proposal Pelatihan Pemanfaatan Geogebra dan Cabri Bagi Guru Muhammadiyah di Kota Depok Jawa Barat},
       publisher = {UHAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/18000/},
          author = {Soebagyo, Joko}
}