@unpublished{repository32258,
           title = {BAP,DKM,DNM K3 dan Hukum Ketenagakerjaan 7A\_23-1},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. HAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/32258/},
          author = {Rifky, Rifky}
}