To cite package ‘ARDECO’ in publications use:

  Bucciarelli G (2024). _ARDECO: Annual Regional Database of the
  European Commission (ARDECO)_. R package version 2.1.0,
  <https://CRAN.R-project.org/package=ARDECO>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ARDECO: Annual Regional Database of the European Commission (ARDECO)},
    author = {Giuseppe Bucciarelli},
    year = {2024},
    note = {R package version 2.1.0},
    url = {https://CRAN.R-project.org/package=ARDECO},
  }