To cite package ‘postcards’ in publications use:

Kross S (2025). postcards: Create Beautiful, Simple Personal Websites. R package version 0.2.3, https://github.com/seankross/postcards.

Corresponding BibTeX entry:

  @Manual{,
    title = {postcards: Create Beautiful, Simple Personal Websites},
    author = {Sean Kross},
    year = {2025},
    note = {R package version 0.2.3},
    url = {https://github.com/seankross/postcards},
  }