To cite package ‘longurl’ in publications use:

Rudis B (2020). longurl: Expand Short 'URLs'. R package version 0.3.3, https://github.com/hrbrmstr/longurl.

Corresponding BibTeX entry:

  @Manual{,
    title = {longurl: Expand Short 'URLs'},
    author = {Bob Rudis},
    year = {2020},
    note = {R package version 0.3.3},
    url = {https://github.com/hrbrmstr/longurl},
  }