@unpublished{repository51901,
           title = {STEKOM WEBINAR-SERTIFIKAT-SK-UNDANGAN},
       publisher = {Universitas Muhammadiyah Prof.Dr. HAMKA},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/51901/},
          author = {Heriansyah, Daram}
}