@unpublished{repository48312,
           title = {Menguji 3 Doktor},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/48312/},
          author = {Bandarsyah, Desvian}
}