To cite package ‘opensky’ in publications use:

Barrett M (2021). opensky: Templates for 'ggplot2' and 'R Markdown'. R package version 0.2.0, https://github.com/emptyfield-ds/opensky.

Corresponding BibTeX entry:

  @Manual{,
    title = {opensky: Templates for 'ggplot2' and 'R Markdown'},
    author = {Malcolm Barrett},
    year = {2021},
    note = {R package version 0.2.0},
    url = {https://github.com/emptyfield-ds/opensky},
  }