To cite cwbtools in publications use:

Blätte A (2019). cwbtools: Tools to create, modify and manage CWB Corpora. R package version 0.1.0, https://CRAN.R-project.org/package=cwbtools.

Corresponding BibTeX entry:

  @Manual{,
    title = {cwbtools: Tools to create, modify and manage CWB Corpora},
    author = {Andreas Blätte},
    year = {2019},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=cwbtools},
  }