To cite package ‘stplanr’ in publications use:

  Robin Lovelace, Richard Ellison (2018). “stplanr: A Package for
  Transport Planning.” _The R Journal_, *10*(2), 10.
  doi:10.32614/RJ-2018-053 <https://doi.org/10.32614/RJ-2018-053>.

A BibTeX entry for LaTeX users is

  @Article{,
    author = {{Robin Lovelace} and {Richard Ellison}},
    title = {stplanr: A Package for Transport Planning},
    year = {2018},
    volume = {10},
    number = {2},
    journal = {{The R Journal}},
    pages = {10},
    doi = {10.32614/RJ-2018-053},
  }