To cite package ‘WordOfMouth’ in publications use:

  Scholz M, Woehner T (2021). _WordOfMouth: Estimates Economic
  Variables for Word-of-Mouth-Campaigns_. R package version 1.1.0,
  <https://CRAN.R-project.org/package=WordOfMouth>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {WordOfMouth: Estimates Economic Variables for Word-of-Mouth-Campaigns},
    author = {Michael Scholz and Thomas Woehner},
    year = {2021},
    note = {R package version 1.1.0},
    url = {https://CRAN.R-project.org/package=WordOfMouth},
  }