To cite package ‘outreg’ in publications use:

  Mori K (2024). _outreg: Regression Table for Publication_. R package
  version 0.2.2, <https://github.com/kota7/outreg>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {outreg: Regression Table for Publication},
    author = {Kota Mori},
    year = {2024},
    note = {R package version 0.2.2},
    url = {https://github.com/kota7/outreg},
  }