To cite package ‘fdid’ in publications use:

Xu Y, Lipkovitz R, Liu E (2026). fdid: Factorial Difference-in-Differences. R package version 1.0.2, https://github.com/xuyiqing/fdid.

Corresponding BibTeX entry:

  @Manual{,
    title = {fdid: Factorial Difference-in-Differences},
    author = {Yiqing Xu and Rivka Lipkovitz and Enhan Liu},
    year = {2026},
    note = {R package version 1.0.2},
    url = {https://github.com/xuyiqing/fdid},
  }