To cite package ‘gsearly’ in publications use:

Parsons N (2026). gsearly: Creates Group Sequential Trial Designs when Early Outcomes are Available. R package version 1.0.0, https://CRAN.R-project.org/package=gsearly.

Corresponding BibTeX entry:

  @Manual{,
    title = {gsearly: Creates Group Sequential Trial Designs when Early
      Outcomes are Available},
    author = {Nick Parsons},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=gsearly},
  }