@unpublished{repository37219,
           title = {Sertifikat SMAN 63},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof DR Hamka},
          author = {Awalludin, Subhan Ajiz},
             url = {http://repository.uhamka.ac.id/id/eprint/37219/}
}