To cite package ‘metapr2’ in publications use:

  Vaulot D (2024). _metapr2: Eukaryotic 18S rRNA metabarcode database_.
  R package version 2.1.1,
  <https://github.com/pr2database/metapr2-shiny>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {metapr2: Eukaryotic 18S rRNA metabarcode database},
    author = {Daniel Vaulot},
    year = {2024},
    note = {R package version 2.1.1},
    url = {https://github.com/pr2database/metapr2-shiny},
  }