To cite package ‘hmstimer’ in publications use:

  Thorley J (2022). _hmstimer: 'hms' Based Timer_. R package version
  0.2.1, <https://CRAN.R-project.org/package=hmstimer>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {hmstimer: 'hms' Based Timer},
    author = {Joe Thorley},
    year = {2022},
    note = {R package version 0.2.1},
    url = {https://CRAN.R-project.org/package=hmstimer},
  }