To cite package ‘co2e’ in publications use:

  Corra J (2026). _co2e: Global Warming Potential Lookups and
  CO2-Equivalent Conversion_. R package version 0.1.0,
  <https://github.com/joewcorra/co2e>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {co2e: Global Warming Potential Lookups and CO2-Equivalent Conversion},
    author = {Joe Corra},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/joewcorra/co2e},
  }