To cite package ‘proratar’ in publications use:

  Homma S (2026). _proratar: Proportional Allocation with Sum
  Consistency_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=proratar>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {proratar: Proportional Allocation with Sum Consistency},
    author = {Shunsuke Homma},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=proratar},
  }