To cite package ‘covid19us’ in publications use:

Dobbyn A (2022). covid19us: Cases of COVID-19 in the United States. R package version 0.1.9, https://github.com/aedobbyn/covid19us.

Corresponding BibTeX entry:

  @Manual{,
    title = {covid19us: Cases of COVID-19 in the United States},
    author = {Amanda Dobbyn},
    year = {2022},
    note = {R package version 0.1.9},
    url = {https://github.com/aedobbyn/covid19us},
  }