To cite package 'TripleR' in publications use:

Schmukle, S. C., Schönbrodt, F.D., & Back, M. D. (2012). TripleR: A package for round robin analyses using R (version 1.1.6). Retrieved from http://www.persoc.net/ToolBox/TripleR.

Corresponding BibTeX entry:

  @Manual{,
    title = {{TripleR}: A package for round robin analyses using R
      (version 1.1.6)},
    author = {Stefan C. Schmukle and Felix D. Schönbrodt and Mitja D.
      Back},
    year = {2012},
    url = {http://www.persoc.net/ToolBox/TripleR},
  }