To cite package ‘wfe’ in publications use:

Kim I, Imai K (2020). wfe: Weighted Linear Fixed Effects Regression Models for Causal Inference. R package version 1.9.1, https://github.com/insongkim/wfe.

Corresponding BibTeX entry:

  @Manual{,
    title = {wfe: Weighted Linear Fixed Effects Regression Models for
      Causal Inference},
    author = {In Song Kim and Kosuke Imai},
    year = {2020},
    note = {R package version 1.9.1},
    url = {https://github.com/insongkim/wfe},
  }