To cite package ‘cplots’ in publications use:

Xu D, Wang Y (2022). cplots: Plots for Circular Data. R package version 0.5-0, https://CRAN.R-project.org/package=cplots.

Corresponding BibTeX entry:

  @Manual{,
    title = {cplots: Plots for Circular Data},
    author = {Danli Xu and Yong Wang},
    year = {2022},
    note = {R package version 0.5-0},
    url = {https://CRAN.R-project.org/package=cplots},
  }