To cite package rDNA in publications use:

Leifeld, Philip (2013). rDNA. A Package to Control Discourse Network Analyzer from R. University of Konstanz, Department of Politics and Public Administration. R package version 1.30.1.

Corresponding BibTeX entry:

  @Manual{,
    title = {{rDNA. A Package to Control Discourse Network Analyzer
      from R}},
    author = {Philip Leifeld},
    year = {2013},
    note = {R package version 1.30.1},
    organization = {University of Konstanz, Department of Politics and
      Public Administration},
    address = {Konstanz},
    url = {http://www.philipleifeld.de},
  }