@unpublished{repository44993,
       publisher = {Universitas Muhammadiyah Prof.DR.HAMKA},
           title = {sk aja metode penelitian klds 4C},
            note = {Unpublished},
             url = {http://repository.uhamka.ac.id/id/eprint/44993/},
          author = {Zulherman, Zulherman}
}