To cite chaidr in publications use:

  Morimoto O (2026). _chaidr: CHAID and Exhaustive CHAID Decision
  Trees_. R package version 0.1.0.9000,
  <https://CRAN.R-project.org/package=chaidr>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{chaidr}: CHAID and Exhaustive CHAID Decision Trees},
    author = {Osamu Morimoto},
    year = {2026},
    note = {R package version 0.1.0.9000},
    url = {https://CRAN.R-project.org/package=chaidr},
  }

For the CHAID algorithm please also cite:

  Kass G (1980). “An Exploratory Technique for Investigating Large
  Quantities of Categorical Data.” _Applied Statistics_, *29*(2),
  119-127. doi:10.2307/2986296 <https://doi.org/10.2307/2986296>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {An Exploratory Technique for Investigating Large Quantities of Categorical Data},
    author = {Gordon V. Kass},
    journal = {Applied Statistics},
    year = {1980},
    volume = {29},
    number = {2},
    pages = {119--127},
    doi = {10.2307/2986296},
  }

For the Exhaustive CHAID variant please also cite:

  Biggs D, de Ville B, Suen E (1991). “A Method of Choosing Multiway
  Partitions for Classification and Decision Trees.” _Journal of
  Applied Statistics_, *18*(1), 49-62. doi:10.1080/02664769100000005
  <https://doi.org/10.1080/02664769100000005>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {A Method of Choosing Multiway Partitions for Classification and Decision Trees},
    author = {David Biggs and Barry {de Ville} and Ed Suen},
    journal = {Journal of Applied Statistics},
    year = {1991},
    volume = {18},
    number = {1},
    pages = {49--62},
    doi = {10.1080/02664769100000005},
  }