To cite package ‘metabook’ in publications use:

Schwarzer G (2026). metabook: Data Sets and Code for "Meta-Analysis with R". R package version 0.3-0, https://github.com/guido-s/metabook.

Corresponding BibTeX entry:

  @Manual{,
    title = {metabook: Data Sets and Code for "Meta-Analysis with R"},
    author = {Guido Schwarzer},
    year = {2026},
    note = {R package version 0.3-0},
    url = {https://github.com/guido-s/metabook},
  }