To cite 'sentometrics' in publications use:

David Ardia, Keven Bluteau, Samuel Borms, Kris Boudt (2017). sentometrics: An Integrated Framework for Textual Sentiment Time Series Aggregation and Prediction. R Package Version 0.2.

Corresponding BibTeX entry:

  @Manual{,
    title = {sentometrics: An Integrated Framework for Textual
      Sentiment Time Series Aggregation and Prediction},
    author = {David Ardia and Keven Bluteau and Samuel Borms and Kris
      Boudt},
    url = {https://CRAN.R-project.org/package=sentometrics},
    year = {2017},
    note = {R Package Version 0.2},
  }