@unpublished{repository31486,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
           title = {BUKTI AJAR},
             url = {http://repository.uhamka.ac.id/id/eprint/31486/},
          author = {Hamid Al Jufri, Jufri}
}