To cite package ‘stratifiedyh’ in publications use:

  Yuanheng D (2024). _stratifiedyh: Stratified Sampling and Labeling of
  Data in R_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=stratifiedyh>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {stratifiedyh: Stratified Sampling and Labeling of Data in R},
    author = {Duan Yuanheng},
    year = {2024},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=stratifiedyh},
  }