To cite package ‘muttest’ in publications use:

  Sobolewski J (2026). _muttest: Mutation Testing_. R package version
  0.2.0, <https://github.com/jakubsob/muttest>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {muttest: Mutation Testing},
    author = {Jakub Sobolewski},
    year = {2026},
    note = {R package version 0.2.0},
    url = {https://github.com/jakubsob/muttest},
  }