To cite R-WinEdt in publications use:

Ligges, U. (2003). R-WinEdt. In: Hornik, K., Leisch, F. and Zeileis, A. (eds.), Proceedings of the 3rd International Workshop on Distributed Statistical Computing (DSC 2003), March 20-22, TU Wien, Vienna, Austria. ISSN 1609-395X, http://www.ci.tuwien.ac.at/Conferences/DSC-2003/Proceedings/.

Corresponding BibTeX entry:

  @InProceedings{,
    title = {R-WinEdt},
    author = {Uwe Ligges},
    booktitle = {Proceedings of the 3rd International Workshop on
      Distributed Statistical Computing (DSC 2003)},
    year = {2003},
    note = {ISSN 1609-395X},
    date = {March 20-22},
    address = {TU Wien, Vienna, Austria},
    editor = {Kurt Hornik and Friedrich Leisch and Achim Zeileis},
    url =
      {http://www.ci.tuwien.ac.at/Conferences/DSC-2003/Proceedings/},
  }