To cite package ‘vcr’ in publications use:

  Chamberlain S, Wolen A, Salmon M, Possenriede D (2024). _vcr: Record
  'HTTP' Calls to Disk_. R package version 1.6.0,
  <https://CRAN.R-project.org/package=vcr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {vcr: Record 'HTTP' Calls to Disk},
    author = {Scott Chamberlain and Aaron Wolen and Maëlle Salmon and Daniel Possenriede},
    year = {2024},
    note = {R package version 1.6.0},
    url = {https://CRAN.R-project.org/package=vcr},
  }