To cite package ‘nycdcm’ in publications use:

  Healy K (2026). _nycdcm: New York City Digital City Map Elements_. R
  package version 0.0.0.9000, <https://github.com/kjhealy/nycdcm>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {nycdcm: New York City Digital City Map Elements},
    author = {Kieran Healy},
    year = {2026},
    note = {R package version 0.0.0.9000},
    url = {https://github.com/kjhealy/nycdcm},
  }