To cite tourrGui in publications use:

Bei Huang, Dianne Cook, Hadley Wickham (2012). tourrGui: A gWidgets GUI for the Tour to Explore High-Dimensional Data Using Low-Dimensional Projections. Journal of Statistical Software, 49(6), 1-12. URL http://www.jstatsoft.org/v49/i06/.

Corresponding BibTeX entry:

  @Article{,
    title = {{tourrGui}: A gWidgets GUI for the Tour to Explore
      High-Dimensional Data Using Low-Dimensional Projections} },
    author = {Bei Huang and Dianne Cook and Hadley Wickham},
    journal = {Journal of Statistical Software},
    year = {2012},
    volume = {49},
    number = {6},
    pages = {1--12},
    url = {http://www.jstatsoft.org/v49/i06/},
  }