To cite package ‘mapedit’ in publications use:

  Appelhans T, Russell K, Busetto L (2020). _mapedit: Interactive
  Editing of Spatial Data in R_. R package version 0.6.1.9002,
  <https://github.com/r-spatial/mapedit>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mapedit: Interactive Editing of Spatial Data in R},
    author = {Tim Appelhans and Kenton Russell and Lorenzo Busetto},
    year = {2020},
    note = {R package version 0.6.1.9002},
    url = {https://github.com/r-spatial/mapedit},
  }