To cite package ‘RCGLS’ in publications use:

Vroege W (2020). RCGLS: Download and Open Data Provided by the Copernicus Global Land Service. R package version 1.0.3, https://CRAN.R-project.org/package=RCGLS.

Corresponding BibTeX entry:

  @Manual{,
    title = {RCGLS: Download and Open Data Provided by the Copernicus
      Global Land Service},
    author = {Willemijn Vroege},
    year = {2020},
    note = {R package version 1.0.3},
    url = {https://CRAN.R-project.org/package=RCGLS},
  }