@unpublished{repository47883,
           title = {SERTIFIKAT NARASUMBER},
       publisher = {UHAMKA},
            note = {Unpublished},
          author = {Yanto, Yanto{,}SE.{,}M. Ak.{,}Ak},
             url = {http://repository.uhamka.ac.id/id/eprint/47883/}
}