To cite rcites use:

  Geschke J, Cazelles K, Bartomeus I, Goldenberg J, Leduc M, Verzelen
  Y, Ross N, Siple M (????). _rcites: An R package to access the CITES
  Species+ database_. R package version 1.3.0.9000,
  <https://docs.ropensci.org/rcites/>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{rcites}: An R package to access the CITES Species+ database},
    author = {Jonas Geschke and Kevin Cazelles and Ignasi Bartomeus and Jonathan Goldenberg and Marie-Bé Leduc and Yasmine Verzelen and Noam Ross and Margaret Siple},
    note = {R package version 1.3.0.9000},
    url = {https://docs.ropensci.org/rcites/},
  }