@unpublished{repository31284,
       publisher = {UNIVERSITAS MUHAMMADIYAH PROF. DR. HAMKA},
            note = {Unpublished},
           title = {7 CONFRENCE HAS ATTENDT THE 3rd ICORAD},
             url = {http://repository.uhamka.ac.id/id/eprint/31284/},
          author = {Eko Digdoyo, Eko}
}