ARDIA, D.; BLUTEAU, K.; BORMS, S.; BOUDT, K. The R Package sentometrics to Compute, Aggregate, and Predict with Textual Sentiment. Journal of Statistical Software, [S. l.], v. 99, n. 2, p. 1–40, 2021. DOI: 10.18637/jss.v099.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v099i02. Acesso em: 17 oct. 2021.