@unpublished{repository31489,
           title = {BUKTI AJAR SEMINAR},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. Dr. Hamka},
             url = {http://repository.uhamka.ac.id/id/eprint/31489/},
          author = {Hamid Al Jufri, Jufri}
}