To cite package ‘TMBhelper’ in publications use:

  Thorson J (2022). _TMBhelper: Package for basic helper functions that
  are not worth putting in a specialized contributed package_. R
  package version 1.4.0, <https://github.com/kaskr/tmb_contrib_r>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {TMBhelper: Package for basic helper functions that are not worth putting in
a specialized contributed package},
    author = {James Thorson},
    year = {2022},
    note = {R package version 1.4.0},
    url = {https://github.com/kaskr/tmb_contrib_r},
  }