To cite package ‘lookup’ in publications use:

Wright K (2024). lookup: Functions Similar to VLOOKUP in Excel. R package version 1.0, https://github.com/kwstat/lookup.

Corresponding BibTeX entry:

  @Manual{,
    title = {lookup: Functions Similar to VLOOKUP in Excel},
    author = {Kevin Wright},
    year = {2024},
    note = {R package version 1.0},
    url = {https://github.com/kwstat/lookup},
  }