@unpublished{repository54570,
           title = {SHARAF 2 2A},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
          author = {Doni Wahidul Akbar, Doni},
             url = {http://repository.uhamka.ac.id/id/eprint/54570/}
}