To cite package ‘CircaCP’ in publications use:

  Chen S (2025). _CircaCP: Sleep and Circadian Metrics Estimation from
  Actigraphy Data_. R package version 0.1.2,
  <https://CRAN.R-project.org/package=CircaCP>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {CircaCP: Sleep and Circadian Metrics Estimation from Actigraphy Data},
    author = {Shanshan Chen},
    year = {2025},
    note = {R package version 0.1.2},
    url = {https://CRAN.R-project.org/package=CircaCP},
  }