To cite package 'lessR' in publications use:

David W. Gerbing, (2016). lessR: Less Code, More Results. R package version 3.5.1, https://cran.r-project.org/web/packages/lessR/index.html.

Corresponding BibTeX entry:

  @Manual{,
    title = {lessR: Less Code, More Results},
    author = {David W. Gerbing},
    year = {2016},
    note = {R package version 3.5.1},
    url = {https://cran.r-project.org/package=lessR},
  }