@unpublished{repository16745,
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof.DR.HAMKA},
           title = {Surat tugas pengmas},
             url = {http://repository.uhamka.ac.id/id/eprint/16745/},
        abstract = {Surat Tugas pengmas},
          author = {Zulherman, Zulherman}
}