To cite package ‘BCDating’ in publications use:

  Einian M (2019). _BCDating: Business Cycle Dating and Plotting
  Tools_. R package version 0.9.8,
  <https://CRAN.R-project.org/package=BCDating>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {BCDating: Business Cycle Dating and Plotting Tools},
    author = {Majid Einian},
    year = {2019},
    note = {R package version 0.9.8},
    url = {https://CRAN.R-project.org/package=BCDating},
  }