To cite package ‘PlotNormTest’ in publications use:

  Tran H, Khattree R (2025). _PlotNormTest: Graphical
  Univariate/Multivariate Assessments for Normality Assumption_. R
  package version 1.0.1, <https://github.com/huongtran53/plotnormtest>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {PlotNormTest: Graphical Univariate/Multivariate Assessments for Normality
Assumption},
    author = {Huong Tran and Ravindra Khattree},
    year = {2025},
    note = {R package version 1.0.1},
    url = {https://github.com/huongtran53/plotnormtest},
  }