To cite package ‘blackmarbler’ in publications use:

Marty R, Stefanini Vicente G (2025). blackmarbler: Black Marble Data and Statistics. R package version 0.2.6, https://github.com/worldbank/blackmarbler.

Corresponding BibTeX entry:

  @Manual{,
    title = {blackmarbler: Black Marble Data and Statistics},
    author = {Robert Marty and Gabriel {Stefanini Vicente}},
    year = {2025},
    note = {R package version 0.2.6},
    url = {https://github.com/worldbank/blackmarbler},
  }