@unpublished{repository32840,
            note = {Unpublished},
           title = {Sertifikat dan Undangan Webinar 3B Classpoint},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/32840/},
          author = {Tsurayya, Ayu}
}