To cite package ‘Rcpp11’ in publications use:

  Francois R, Ushey K (2014). _Rcpp11: R and C++11_. R package version
  3.1.2.0.1, <https://github.com/rcpp11/rcpp11>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Rcpp11: R and C++11},
    author = {Romain Francois and Kevin Ushey},
    year = {2014},
    note = {R package version 3.1.2.0.1},
    url = {https://github.com/rcpp11/rcpp11},
  }