To cite package ‘chcd’ in publications use:

  Prisk D (2025). _chcd: Access Canadian Historical Climate Data_. R
  package version 0.1.1, <https://CRAN.R-project.org/package=chcd>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {chcd: Access Canadian Historical Climate Data},
    author = {Dan Prisk},
    year = {2025},
    note = {R package version 0.1.1},
    url = {https://CRAN.R-project.org/package=chcd},
  }