To cite package ‘using’ in publications use:

North A, McBain M (2025). using: Add version constraints to library() calls. R package version 0.4.0, https://github.com/anthonynorth/using.

Corresponding BibTeX entry:

  @Manual{,
    title = {using: Add version constraints to library() calls},
    author = {Anthony North and Miles McBain},
    year = {2025},
    note = {R package version 0.4.0},
    url = {https://github.com/anthonynorth/using},
  }