To cite package ‘cleanNPN’ in publications use:

Shepherd B, Song Y (2026). cleanNPN: Reproducible Workflow for Cleaning National Phenology Network Status and Intensity Data. R package version 0.0.0.9000, https://github.com/pitt-songlab/cleannpn.

Corresponding BibTeX entry:

  @Manual{,
    title = {cleanNPN: Reproducible Workflow for Cleaning National
      Phenology Network Status and Intensity Data},
    author = {Brianna Shepherd and Yiluan Song},
    year = {2026},
    note = {R package version 0.0.0.9000},
    url = {https://github.com/pitt-songlab/cleannpn},
  }