To cite package ‘HKRbook’ in publications use:

Klinke S (2022). HKRbook: Apps and Data for the Book "Introduction to Statistics". R package version 0.1.4, https://github.com/sigbertklinke/hkrbook.

Corresponding BibTeX entry:

  @Manual{,
    title = {HKRbook: Apps and Data for the Book "Introduction to
      Statistics"},
    author = {Sigbert Klinke},
    year = {2022},
    note = {R package version 0.1.4},
    url = {https://github.com/sigbertklinke/hkrbook},
  }