To cite package ‘R2jags’ in publications use:

  Su Y, Yajima M (2024). _R2jags: Using R to Run 'JAGS'_. R package
  version 0.8-9, <https://CRAN.R-project.org/package=R2jags>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {R2jags: Using R to Run 'JAGS'},
    author = {Yu-Sung Su and Masanao Yajima},
    year = {2024},
    note = {R package version 0.8-9},
    url = {https://CRAN.R-project.org/package=R2jags},
  }