To cite package ‘reproj’ in publications use:

  Sumner M (2024). _reproj: Coordinate System Transformations for
  Generic Map Data_. R package version 0.7.0, ,
  <https://github.com/hypertidy/reproj>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {reproj: Coordinate System Transformations for Generic Map Data},
    author = {Michael D. Sumner},
    year = {2024},
    note = {R package version 0.7.0, 
},
    url = {https://github.com/hypertidy/reproj},
  }