To cite pathroutr in publications use:

  Josh M. London. (2020, December 14). pathroutr: An R Package for
  (Re-)Routing Paths Around Barriers (Version v0.1.1-beta). Zenodo.
  http://doi.org/10.5281/zenodo.4321827

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pathroutr: An R Package for (Re-)Routing Paths Around Barriers},
    author = {Josh M. London},
    month = {dec},
    year = {2020},
    publisher = {Zenodo},
    version = {v0.1.1-beta},
    doi = {10.5281/zenodo.4321827},
    url = {https://doi.org/10.5281/zenodo.4321827},
  }