@unpublished{repository48510,
           title = {Sertifikat Narsum Narkoba SMKN 7 Jakarta Timur},
       publisher = {SMKN 7 Jakarta Timur},
            note = {Unpublished},
          author = {Tri Widiastuti, Haning},
             url = {http://repository.uhamka.ac.id/id/eprint/48510/}
}