To cite the ModStatR package in publications use:

  Frédéric Bertrand, Emmanuelle Claeys and Myriam Maumy-Bertrand
  (2023). Statistical Modelling in Action with R, R package version
  1.3.2.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Statistical Modelling in Action with R},
    author = {Frederic Bertrand and Emmanuelle Claeys and Myriam Maumy-Bertrand},
    year = {2023},
    note = {R package version 1.3.2},
    url = {https://github.com/fbertran/ModStatR},
  }

  Frédéric Bertrand, Emmanuelle Claeys and Myriam Maumy-Bertrand
  (2023). Statistical Modelling in Action with R, 1ère édition, Dunod,
  Paris.

A BibTeX entry for LaTeX users is

  @Book{,
    title = {Modélisation statistique par la pratique avec R},
    author = {Frederic Bertrand and Emmanuelle Claeys and Myriam Maumy-Bertrand},
    publisher = {Dunod, Paris},
    year = {2019},
    url = {https://github.com/fbertran/ModStatR},
  }