To cite package ‘useful’ in publications use:

Lander JP (2026). useful: A Collection of Handy, Useful Functions. R package version 1.2.7, https://github.com/jaredlander/useful.

Corresponding BibTeX entry:

  @Manual{,
    title = {useful: A Collection of Handy, Useful Functions},
    author = {Jared P. Lander},
    year = {2026},
    note = {R package version 1.2.7},
    url = {https://github.com/jaredlander/useful},
  }