To cite the 'ShinyItemAnalysis' package in publications use:

  Martinková, P., & Hladká, A. (2023). Computational Aspects of
  Psychometric Methods: With. Chapman and Hall/CRC. doi:
  10.1201/9781003054313

A BibTeX entry for LaTeX users is

  @Book{,
    title = {Computational Aspects of Psychometric Methods: With {R}.},
    author = {{Patrícia Martinková} and {Adéla Hladká}},
    year = {2023},
    publisher = {Chapman and Hall/CRC},
    doi = {10.1201/9781003054313},
  }

  Martinková, P., & Drabinová, A. (2018). ShinyItemAnalysis for
  Teaching Psychometrics and to Enforce Routine Analysis of Educational
  Tests. The R Journal, 10(2), 503-515. doi: 10.32614/RJ-2018-074

A BibTeX entry for LaTeX users is

  @Article{,
    title = {{ShinyItemAnalysis} for teaching psychometrics and to enforce routine analysis of educational tests.},
    author = {{Patrícia Martinková} and {Adéla Drabinová}},
    year = {2018},
    journal = {The R Journal},
    volume = {10},
    number = {2},
    pages = {503--515},
    doi = {10.32614/RJ-2018-074},
  }