@unpublished{repository44922,
           title = {ketua \& pembicara pelatihan},
       publisher = {Universitas Muhammadiyah Prof.DR.HAMKA},
            note = {Unpublished},
          author = {Zulherman, Zulherman},
             url = {http://repository.uhamka.ac.id/id/eprint/44922/}
}