To cite package ‘psych’ in publications use:

  William Revelle (2024). _psych: Procedures for Psychological,
  Psychometric, and Personality Research_. Northwestern University,
  Evanston, Illinois. R package version 2.4.6,
  <https://CRAN.R-project.org/package=psych>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {psych: Procedures for Psychological, Psychometric, and Personality Research},
    author = {{William Revelle}},
    organization = {Northwestern University},
    address = {Evanston, Illinois},
    year = {2024},
    note = {R package version 2.4.6},
    url = {https://CRAN.R-project.org/package=psych},
  }