To cite the 'Rcmdr' package in publications use:

Fox, J. (2005). The R Commander: A Basic Statistics Graphical User Interface to R. Journal of Statistical Software, 14(9): 1--42.

Corresponding BibTeX entry:

  @Article{,
    title = {The {R} {C}ommander: A Basic Statistics Graphical User
      Interface to {R}},
    author = {John Fox},
    year = {2005},
    journal = {Journal of Statistical Software},
    volume = {14},
    number = {9},
    pages = {1--42},
    url = {http://www.jstatsoft.org/v14/i09},
  }