To cite package ‘cpp4r’ in publications use:

  Vargas Sepulveda M, Posit Software, PBC (2026). _cpp4r: Header-Only
  'C++' and 'R' Interface_. R package version 1.0.0,
  <https://CRAN.R-project.org/package=cpp4r>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {cpp4r: Header-Only 'C++' and 'R' Interface},
    author = {Mauricio {Vargas Sepulveda} and {Posit Software, PBC}},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=cpp4r},
  }