@unpublished{repository51768,
           title = {PIAGAM PENGHARGAAN INTERNASIONAL},
       publisher = {Universitas Muhammadiyah Prof DR Hamka},
            note = {Unpublished},
          author = {Hendra Apriyadi, Hendra},
             url = {http://repository.uhamka.ac.id/id/eprint/51768/}
}