@unpublished{repository17825,
            note = {Unpublished},
            year = {2021},
       publisher = {Perhimpunan Dokter Umum Indonesia},
           title = {sertifikat seminar oral ulceration},
             url = {http://repository.uhamka.ac.id/id/eprint/17825/},
          author = {Agus Rahmadi, Agus}
}