To cite package ‘usefun’ in publications use:

Zobolas J (2024). usefun: A Collection of Useful Functions by John. R package version 0.5.2, https://github.com/bblodfon/usefun.

Corresponding BibTeX entry:

  @Manual{,
    title = {usefun: A Collection of Useful Functions by John},
    author = {John Zobolas},
    year = {2024},
    note = {R package version 0.5.2},
    url = {https://github.com/bblodfon/usefun},
  }