To cite package ‘mapchina’ in publications use:

Xu M (2021). mapchina: China Administrative Divisions Geospatial Shapefile Data. R package version 0.1.0, https://github.com/xmc811/mapchina.

Corresponding BibTeX entry:

  @Manual{,
    title = {mapchina: China Administrative Divisions Geospatial
      Shapefile Data},
    author = {Mingchu Xu},
    year = {2021},
    note = {R package version 0.1.0},
    url = {https://github.com/xmc811/mapchina},
  }