To cite package ‘papaja’ in publications use:

  Aust, F. & Barth, M. (2024). papaja: Prepare reproducible APA journal
  articles with R Markdown. R package version 0.1.3. Retrieved from
  https://github.com/crsh/papaja

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {{papaja}: {Prepare} reproducible {APA} journal articles with {R Markdown}},
    author = {Frederik Aust and Marius Barth},
    year = {2024},
    note = {R package version 0.1.3},
    url = {https://github.com/crsh/papaja},
    doi = {10.32614/CRAN.package.papaja},
  }