To cite package ‘valentine’ in publications use:

  François R (2025). _valentine: Spread the Love for R Packages with
  Poetry_. R package version 2025.2.14,
  <https://CRAN.R-project.org/package=valentine>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {valentine: Spread the Love for R Packages with Poetry},
    author = {Romain François},
    year = {2025},
    note = {R package version 2025.2.14},
    url = {https://CRAN.R-project.org/package=valentine},
  }