To cite package ‘FHDI’ in publications use:

  Cho I, Kim J, Im J, Yang Y (2020). _FHDI: Fractional Hot Deck and
  Fully Efficient Fractional Imputation_. R package version 1.4.1,
  <https://CRAN.R-project.org/package=FHDI>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {FHDI: Fractional Hot Deck and Fully Efficient Fractional Imputation},
    author = {Inho Cho and Jaekwang Kim and Jongho Im and Yicheng Yang},
    year = {2020},
    note = {R package version 1.4.1},
    url = {https://CRAN.R-project.org/package=FHDI},
  }