@unpublished{repository24327,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. HAMKA},
           title = {Sertifikat Wawang Setiawan Sukarya},
             url = {http://repository.uhamka.ac.id/id/eprint/24327/},
          author = {Wawang Setiawan Sukarya, Wawang}
}