To cite package ‘rworldxtra’ in publications use:

South A (2015). rworldxtra: Country boundaries at high resolution.. R package version 1.01, https://github.com/andysouth/rworldxtra.

ATTENTION: This citation information has been auto-generated from the package DESCRIPTION file and may need manual editing, see ‘help("citation")’.

Corresponding BibTeX entry:

  @Manual{,
    title = {rworldxtra: Country boundaries at high resolution.},
    author = {Andy South},
    year = {2015},
    note = {R package version 1.01},
    url = {https://github.com/andysouth/rworldxtra},
  }