@unpublished{repository48831,
       publisher = {Universitas Muhammadiyah Prof.DR.HAMKA},
           title = {bap 1s rpl},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/48831/},
          author = {Zulherman, Zulherman}
}