To cite package ‘DeltaTools’ in publications use:

  Matheny M, Resnic F, Ssemaganda H, Koola J, Perkins A (2026).
  _DeltaTools: DELTA Analytic Tools and Learning Curve Analysis_.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {DeltaTools: DELTA Analytic Tools and Learning Curve Analysis},
    author = {Michael Matheny and Frederic Resnic and Henry Ssemaganda and Jejo Koola and Amy Perkins},
    year = {2026},
  }