To cite package 'DescTools' in publications use:

Andri et mult. al. S (2020). DescTools: Tools for Descriptive Statistics. R package version 0.99.39, https://cran.r-project.org/package=DescTools.

Corresponding BibTeX entry:

  @Manual{,
    title = {{DescTools}: Tools for Descriptive Statistics},
    author = {Signorell {Andri et mult. al.}},
    year = {2020},
    note = {R package version 0.99.39},
    url = {https://cran.r-project.org/package=DescTools},
  }