To cite package ‘spatstat.gui’ in publications use:

  Baddeley A, Turner R, Rubak E (2024). _spatstat.gui: Interactive
  Graphics Functions for the 'spatstat' Package_. R package version
  3.1-0, <https://CRAN.R-project.org/package=spatstat.gui>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {spatstat.gui: Interactive Graphics Functions for the 'spatstat' Package},
    author = {Adrian Baddeley and Rolf Turner and Ege Rubak},
    year = {2024},
    note = {R package version 3.1-0},
    url = {https://CRAN.R-project.org/package=spatstat.gui},
  }