To cite package ‘tkImgR’ in publications use:

Campelo F (2022). tkImgR: Simple Image Viewer for R Using the 'tcltk' Package. R package version 0.0.5, https://CRAN.R-project.org/package=tkImgR.

Corresponding BibTeX entry:

  @Manual{,
    title = {tkImgR: Simple Image Viewer for R Using the 'tcltk'
      Package},
    author = {Filipe Campelo},
    year = {2022},
    note = {R package version 0.0.5},
    url = {https://CRAN.R-project.org/package=tkImgR},
  }