To cite package ‘rjmcmc’ in publications use:

  Gelling N, Schofield MR, Barker RJ (2019). _rjmcmc: Reversible-Jump
  MCMC Using Post-Processing_. R package version 0.4.5,
  <https://CRAN.R-project.org/package=rjmcmc>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rjmcmc: Reversible-Jump MCMC Using Post-Processing},
    author = {Nick Gelling and Matthew R. Schofield and Richard J. Barker},
    year = {2019},
    note = {R package version 0.4.5},
    url = {https://CRAN.R-project.org/package=rjmcmc},
  }