@unpublished{repository32445,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {Surat Tugas dan Sertifikat Best Paper},
             url = {http://repository.uhamka.ac.id/id/eprint/32445/},
          author = {Burhayani, Eni}
}