To cite package ‘versions’ in publications use:

Golding N (2018). versions: Query and Install Specific Versions of Packages on CRAN. R package version 0.4, https://github.com/goldingn/versions.

ATTENTION: This citation information has been auto-generated from the package DESCRIPTION file and may need manual editing, see ‘help("citation")’.

Corresponding BibTeX entry:

  @Manual{,
    title = {versions: Query and Install Specific Versions of Packages
      on CRAN},
    author = {Nick Golding},
    year = {2018},
    note = {R package version 0.4},
    url = {https://github.com/goldingn/versions},
  }