To cite package ‘IRTC’ in publications use:

Ma K (2026). IRTC: Marginal Maximum Likelihood Estimation for Item Response Models. R package version 1.1.2, https://github.com/weiandata/irtc.

Corresponding BibTeX entry:

  @Manual{,
    title = {IRTC: Marginal Maximum Likelihood Estimation for Item
      Response Models},
    author = {Kunxiang Ma},
    year = {2026},
    note = {R package version 1.1.2},
    url = {https://github.com/weiandata/irtc},
  }