To cite package ‘maps’ in publications use:

Becker RA, Wilks AR, Brownrigg R, Minka TP, Deckmyn A (2025). maps: Draw Geographical Maps. R package version 3.4.3, https://github.com/adeckmyn/maps.

Corresponding BibTeX entry:

  @Manual{,
    title = {maps: Draw Geographical Maps},
    author = {Richard A. Becker and Allan R. Wilks and Ray Brownrigg
      and Thomas P. Minka and Alex Deckmyn},
    year = {2025},
    note = {R package version 3.4.3},
    url = {https://github.com/adeckmyn/maps},
  }