@unpublished{repository19395,
           title = {Surat Tugas Uji Kompetensi dari  Direktur LSP Geo Mineral Batubara dan Energi (LSP.GMBE)},
            type = {Documentation},
            note = {Unpublished},
       publisher = {MM UHAMKA},
             url = {http://repository.uhamka.ac.id/id/eprint/19395/},
          author = {Bambang, Dwi Hartono}
}