@unpublished{repository34508,
       publisher = {UHAMKA},
            note = {Unpublished},
           title = {Surat Tugas Narasumber Seminar Nasional Universitas Muhammadiyah Sumatera Utara},
             url = {http://repository.uhamka.ac.id/id/eprint/34508/},
          author = {Fuad, Ai Fatimah Nur}
}