To cite package ‘leaflet.extras’ in publications use:

  Gatscha S, Karambelkar B, Schloerke B (2026). _leaflet.extras: Extra
  Functionality for 'leaflet' Package_. R package version 2.0.2.0000,
  <https://github.com/sebastien-plutniak/leaflet.extrasissues>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {leaflet.extras: Extra Functionality for 'leaflet' Package},
    author = {Sebastian Gatscha and Bhaskar Karambelkar and Barret Schloerke},
    year = {2026},
    note = {R package version 2.0.2.0000},
    url = {https://github.com/sebastien-plutniak/leaflet.extrasissues},
  }