To cite package ‘ria.test’ in publications use:

  Yu A, Williams N, Díaz I (2026). _ria.test: Testing Equality of
  Natural Mediation Effects and Their Randomized Interventional
  Analogues_. R package version 0.2.1,
  <https://CRAN.R-project.org/package=ria.test>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ria.test: Testing Equality of Natural Mediation Effects and Their
Randomized Interventional Analogues},
    author = {Ang Yu and Nicholas Williams and Iván Díaz},
    year = {2026},
    note = {R package version 0.2.1},
    url = {https://CRAN.R-project.org/package=ria.test},
  }