To cite validate in publications use:

  Mark P. J. van der Loo, Edwin de Jonge (2021). Data Validation
  Infrastructure for R. Journal of Statistical Software, 97(10), 1-31.
  doi:10.18637/jss.v097.i10

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Data Validation Infrastructure for {R}},
    author = {Mark P. J. {van der Loo} and Edwin {de Jonge}},
    journal = {Journal of Statistical Software},
    year = {2021},
    volume = {97},
    number = {10},
    pages = {1--31},
    doi = {10.18637/jss.v097.i10},
  }