To cite package ‘comphy’ in publications use:

  Foadi J (2026). _comphy: Functions Used in the Book "Computational
  Physics with R"_. R package version 1.0.5,
  <https://github.com/jfoadi/comphy>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {comphy: Functions Used in the Book "Computational Physics with R"},
    author = {James Foadi},
    year = {2026},
    note = {R package version 1.0.5},
    url = {https://github.com/jfoadi/comphy},
  }