@unpublished{repository3047,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR HAMKA},
           title = {Surat Tugas Webinar Sado004},
             url = {http://repository.uhamka.ac.id/id/eprint/3047/},
          author = {Utari, Retno}
}