To cite package ‘vita’ in publications use:

Celik E (2015). vita: Variable Importance Testing Approaches. R package version 1.0.0, https://CRAN.R-project.org/package=vita.

Corresponding BibTeX entry:

  @Manual{,
    title = {vita: Variable Importance Testing Approaches},
    author = {Ender Celik},
    year = {2015},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=vita},
  }