To cite package ‘heritability’ in publications use:

  Kruijer W, van Rossum B (2026). _heritability: Marker-Based
  Estimation of Heritability Using Individual Plant or Plot Data_. R
  package version 1.5,
  <https://CRAN.R-project.org/package=heritability>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {heritability: Marker-Based Estimation of Heritability Using Individual Plant
or Plot Data},
    author = {Willem Kruijer and Bart-Jan {van Rossum}},
    year = {2026},
    note = {R package version 1.5},
    url = {https://CRAN.R-project.org/package=heritability},
  }