To cite package ‘fad’ in publications use:

  Dutta S, Dai F (2022). _fad: Factor Analysis for Data_. R package
  version 0.9-1, <https://CRAN.R-project.org/package=fad>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fad: Factor Analysis for Data},
    author = {Somak Dutta and Fan Dai},
    year = {2022},
    note = {R package version 0.9-1},
    url = {https://CRAN.R-project.org/package=fad},
  }