To cite package ‘apim’ in publications use:

  Ackerman R (2026). _apim: Actor-Partner Interdependence Model
  Convenience Functions_. R package version 0.2.1,
  <https://github.com/robackerman/apim>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {apim: Actor-Partner Interdependence Model Convenience Functions},
    author = {Robert Ackerman},
    year = {2026},
    note = {R package version 0.2.1},
    url = {https://github.com/robackerman/apim},
  }