To cite the 'stdmod' package in publications use:

Cheung SF, Cheung S, Lau EYY, Hui CH, Vong WN (2022). “Improving an old way to measure moderation effect in standardized units.” Health Psychology, 41(7), 502-505. doi:10.1037/hea0001188.

Corresponding BibTeX entry:

  @Article{,
    title = {Improving an old way to measure moderation effect in
      standardized units.},
    author = {S. F. Cheung and S.-H. Cheung and E. Y. Y. Lau and C. H.
      Hui and W. N. Vong},
    journal = {Health Psychology},
    year = {2022},
    volume = {41},
    number = {7},
    pages = {502-505},
    doi = {10.1037/hea0001188},
  }