@manual{repository2203,
       publisher = {MM UHAMKA},
            type = {Documentation},
           title = {surat tugas, undangan, materi musda Gapeksindo DKI feb 2019},
             url = {http://repository.uhamka.ac.id/id/eprint/2203/},
          author = {Bambang, Dwi Hartono}
}