@unpublished{repository17026,
           title = {Disertasi Gufron},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof.Dr.Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/17026/},
          author = {Gufron Amirullah, Gufron}
}