@unpublished{repository6721,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
           title = {Surat Tugas Seminar Umum Karis},
             url = {http://repository.uhamka.ac.id/id/eprint/6721/},
          author = {Utari, Retno}
}