To cite package ‘RSAGA’ in publications use:

  Brenning A, Bangs D, Becker M (2023). _RSAGA: SAGA Geoprocessing and
  Terrain Analysis_. R package version 1.4.1,
  <https://github.com/r-spatial/rsaga>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {RSAGA: SAGA Geoprocessing and Terrain Analysis},
    author = {Alexander Brenning and Donovan Bangs and Marc Becker},
    year = {2023},
    note = {R package version 1.4.1},
    url = {https://github.com/r-spatial/rsaga},
  }