To cite package ‘gWidgets2tcltk’ in publications use:

  Verzani J (2026). _gWidgets2tcltk: Toolkit Implementation of
  gWidgets2 for tcltk_. R package version 1.0-9,
  <https://github.com/gwidgets3/gwidgets2tcltk>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {gWidgets2tcltk: Toolkit Implementation of gWidgets2 for tcltk},
    author = {John Verzani},
    year = {2026},
    note = {R package version 1.0-9},
    url = {https://github.com/gwidgets3/gwidgets2tcltk},
  }