To cite package ‘WorldMapR’ in publications use:

  Annicchiarico L (2024). _WorldMapR: Worldwide or Coordinates-Based
  Heat Maps_. R package version 0.1.3,
  <https://CRAN.R-project.org/package=WorldMapR>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {WorldMapR: Worldwide or Coordinates-Based Heat Maps},
    author = {Luigi Annicchiarico},
    year = {2024},
    note = {R package version 0.1.3},
    url = {https://CRAN.R-project.org/package=WorldMapR},
  }