@unpublished{repository30975,
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
            note = {Unpublished},
           title = {Surat Tugas Belajar dan Kelulusan Studi Doktor},
             url = {http://repository.uhamka.ac.id/id/eprint/30975/},
          author = {Suciati, Rizkia}
}