To cite package ‘DTEAssurance’ in publications use:

  Salsbury J (2025). _DTEAssurance: Assurance Methods for Clinical
  Trials with a Delayed Treatment Effect_. R package version 1.1.0,
  <https://CRAN.R-project.org/package=DTEAssurance>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {DTEAssurance: Assurance Methods for Clinical Trials with a Delayed Treatment
Effect},
    author = {James Salsbury},
    year = {2025},
    note = {R package version 1.1.0},
    url = {https://CRAN.R-project.org/package=DTEAssurance},
  }