To cite koRpus in publications use:

Michalke, M. (2018). koRpus: An R Package for Text Analysis (Version 0.11-5). Available from https://reaktanz.de/?c=hacking&s=koRpus

Corresponding BibTeX entry:

  @Manual{,
    title = {koRpus: An R Package for Text Analysis},
    author = {Meik Michalke},
    year = {2018},
    note = {(Version 0.11-5)},
    url = {https://reaktanz.de/?c=hacking&s=koRpus},
  }