To cite package ‘RSCAT’ in publications use:

  Jiang B (2021). _RSCAT: Shadow-Test Approach to Computerized Adaptive
  Testing_. R package version 1.1.3,
  <https://CRAN.R-project.org/package=RSCAT>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {RSCAT: Shadow-Test Approach to Computerized Adaptive Testing},
    author = {Bingnan Jiang},
    year = {2021},
    note = {R package version 1.1.3},
    url = {https://CRAN.R-project.org/package=RSCAT},
  }