To cite package ‘repeated’ in publications use:

  Swihart B, Lindsey J (2024). _repeated: Non-Normal Repeated
  Measurements Models_. R package version 1.1.10,
  <https://CRAN.R-project.org/package=repeated>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {repeated: Non-Normal Repeated Measurements Models},
    author = {Bruce Swihart and Jim Lindsey},
    year = {2024},
    note = {R package version 1.1.10},
    url = {https://CRAN.R-project.org/package=repeated},
  }