To cite package ‘oceanis’ in publications use:

  Novella S, Calvet S, Chauvot N (2022). _oceanis: Cartography for
  Statistical Analysis_. R package version 1.8.5,
  <https://github.com/insee-psar-at/oceanis-package>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {oceanis: Cartography for Statistical Analysis},
    author = {Sébastien Novella and Sébastien Calvet and Nicolas Chauvot},
    year = {2022},
    note = {R package version 1.8.5},
    url = {https://github.com/insee-psar-at/oceanis-package},
  }