@unpublished{repository19800,
            year = {2023},
            note = {Unpublished},
       publisher = {Universitas Muhammadiyah Prof. DR. Hamka},
           title = {Surat Tugas dan Sertif ASPBJI},
           month = {February},
             url = {http://repository.uhamka.ac.id/id/eprint/19800/},
          author = {Utari, Retno}
}