To cite package ‘emIRT’ in publications use:

Imai K, Lo J, Olmsted J (2025). emIRT: EM Algorithms for Estimating Item Response Theory Models. R package version 0.0.15, https://CRAN.R-project.org/package=emIRT.

Corresponding BibTeX entry:

  @Manual{,
    title = {emIRT: EM Algorithms for Estimating Item Response Theory
      Models},
    author = {Kosuke Imai and James Lo and Jonathan Olmsted},
    year = {2025},
    note = {R package version 0.0.15},
    url = {https://CRAN.R-project.org/package=emIRT},
  }