To cite package 'prospectr' in publications use:

  Antoine Stevens and Leornardo Ramirez-Lopez (2025). An introduction
  to the prospectr package. R package Vignette R package version 0.2.8.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {An introduction to the prospectr package},
    author = {Antoine Stevens and Leornardo Ramirez-Lopez},
    publication = {R package Vignette},
    year = {2025},
    note = {R package version 0.2.8},
  }