@manual{repository4555,
            type = {Documentation},
           title = {Sertifikat Internasional Ardianto Bayu},
       publisher = {MM UHAMKA},
            note = {Submitted},
          author = {Bambang, Dwi Hartono},
             url = {http://repository.uhamka.ac.id/id/eprint/4555/}
}