To cite package ‘estimability’ in publications use:

Lenth R (2024). estimability: Tools for Assessing Estimability of Linear Predictions. R package version 1.5.1, https://github.com/rvlenth/estimability.

Corresponding BibTeX entry:

  @Manual{,
    title = {estimability: Tools for Assessing Estimability of Linear
      Predictions},
    author = {Russell Lenth},
    year = {2024},
    note = {R package version 1.5.1},
    url = {https://github.com/rvlenth/estimability},
  }