To cite randtoolbox in publications use:

Christophe D, Petr S (2022). randtoolbox: Generating and Testing Random Numbers. R package version 2.0.0.

Corresponding BibTeX entry:

  @Manual{,
    title = {randtoolbox: Generating and Testing Random Numbers},
    author = {Dutang Christophe and Savicky Petr},
    year = {2022},
    note = {R package version 2.0.0},
  }