To cite package ‘gpx’ in publications use:

Ewing M (2021). gpx: Process GPX Files into R Data Structures. R package version 1.1.0, https://github.com/bmewing/gpx.

Corresponding BibTeX entry:

  @Manual{,
    title = {gpx: Process GPX Files into R Data Structures},
    author = {Mark Ewing},
    year = {2021},
    note = {R package version 1.1.0},
    url = {https://github.com/bmewing/gpx},
  }