To cite package ‘sds’ in publications use:

  Sumner M (2026). _sds: Spatial Data Sources_. R package version
  0.3.0, <https://CRAN.R-project.org/package=sds>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {sds: Spatial Data Sources},
    author = {Michael Sumner},
    year = {2026},
    note = {R package version 0.3.0},
    url = {https://CRAN.R-project.org/package=sds},
  }