@unpublished{repository50222,
           title = {Sertifikat Webinar Introduction to TRIZ},
       publisher = {Universitas Muhammadiyah Prof.DR.Hamka},
            note = {Unpublished},
          author = {Fikri, Agus},
             url = {http://repository.uhamka.ac.id/id/eprint/50222/}
}