To cite package ‘fect’ in publications use:

  Xu Y, Liu L, Liu Z, Wang Y, Qin T, Hu S, Lipkovitz R (2026). _fect:
  Fixed Effects Counterfactual Estimators_. R package version 2.4.5,
  <https://github.com/xuyiqing/fect>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fect: Fixed Effects Counterfactual Estimators},
    author = {Yiqing Xu and Licheng Liu and Ziyi Liu and Ye Wang and Tianzhu Qin and Shiyun Hu and Rivka Lipkovitz},
    year = {2026},
    note = {R package version 2.4.5},
    url = {https://github.com/xuyiqing/fect},
  }