To cite package ‘HOIFCar’ in publications use:

  Zhao S, Wang X, Gu Y (2026). _HOIFCar: Covariate Adjustment in RCT by
  Higher-Order Influence Functions_. R package version 1.1.1,
  <https://CRAN.R-project.org/package=HOIFCar>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {HOIFCar: Covariate Adjustment in RCT by Higher-Order Influence Functions},
    author = {Sihui Zhao and Xinbo Wang and Yujia Gu},
    year = {2026},
    note = {R package version 1.1.1},
    url = {https://CRAN.R-project.org/package=HOIFCar},
  }