@unpublished{repository27910,
           title = {Surat Tugas, Cover dan Artikel Ellter},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/27910/},
          author = {Burhayani, Eni}
}