To cite package 'zipfR' in publications use:

Evert, Stefan and Baroni, Marco (2007). "zipfR: Word frequency distributions in R." In Proceedings of the 45th Annual Meeting of the Association for Computational Linguistics, Posters and Demonstrations Sessions, pages 29-32, Prague, Czech Republic. (R package version 0.6-6 of 2012-04-03)

Thanks for crediting our work! We hope that you enjoy using the package and would like to hear your comments, criticism and suggestions for future enhancements.

Corresponding BibTeX entry:

  @InProceedings{,
    author = {Stefan Evert and Marco Baroni},
    title = {{\em zipfR}: Word Frequency Distributions in {R}},
    booktitle = {Proceedings of the 45th Annual Meeting of the
      Association for Computational Linguistics, Posters and
      Demonstrations Sessions},
    address = {Prague, Czech Republic},
    year = {2007},
    pages = {29--32},
    note = {(R package version 0.6-6 of 2012-04-03)},
  }