To cite JumpeR in publications use:

Pilgrim GA, Perry GM (2020). JumpeR: Package for working with Track and Field Data. https://github.com/gpilgrim2670/JumpeR.

Corresponding BibTeX entry:

  @Manual{,
    title = {{JumpeR}: {P}ackage for working with Track and Field
      Data},
    author = {Gregory A. Pilgrim and George M. Perry},
    year = {2020},
    url = {https://github.com/gpilgrim2670/JumpeR},
  }