To cite package ‘RInside’ in publications use:

  Eddelbuettel D, Francois R (2023). _RInside: C++ Classes to Embed R
  in C++ (and C) Applications_. R package version 0.2.18.1, ,
  <https://github.com/eddelbuettel/rinside>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {RInside: C++ Classes to Embed R in C++ (and C) Applications},
    author = {Dirk Eddelbuettel and Romain Francois},
    year = {2023},
    note = {R package version 0.2.18.1, 
},
    url = {https://github.com/eddelbuettel/rinside},
  }